Improved whitespace to fix g++ 7 warning

.../ros_comm/tools/rosbag_storage/src/view.cpp:249:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
     if ((bag.getMode() & bagmode::Read) != bagmode::Read)
     ^~
.../ros_comm/tools/rosbag_storage/src/view.cpp:252:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
  boost::function<bool(ConnectionInfo const*)> query = TrueQuery();
  ^~~~~

tools/rosbag_storage/src/view.cpp

@@ -1,9 +1,9 @@
 // Copyright (c) 2009, Willow Garage, Inc.
 // All rights reserved.
-// 
+//
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
-// 
+//
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above copyright
@@ -12,7 +12,7 @@
 //     * Neither the name of Willow Garage, Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived from
 //       this software without specific prior written permission.
-// 
+//
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -135,13 +135,13 @@ void View::iterator::increment() {
     if (view_->reduce_overlap_)
     {
         std::multiset<IndexEntry>::const_iterator last_iter = iters_.back().iter;
-    
+
         while (iters_.back().iter == last_iter)
         {
             iters_.back().iter++;
             if (iters_.back().iter == iters_.back().range->end)
                 iters_.pop_back();
-      
+
             std::sort(iters_.begin(), iters_.end(), ViewIterHelperCompare());
         }
 
@@ -150,7 +150,7 @@ void View::iterator::increment() {
         iters_.back().iter++;
         if (iters_.back().iter == iters_.back().range->end)
             iters_.pop_back();
-      
+
         std::sort(iters_.begin(), iters_.end(), ViewIterHelperCompare());
     }
 }
@@ -169,11 +169,11 @@ MessageInstance& View::iterator::dereference() const {
 View::View(bool const& reduce_overlap) : view_revision_(0), size_cache_(0), size_revision_(0), reduce_overlap_(reduce_overlap) { }
 
 View::View(Bag const& bag, ros::Time const& start_time, ros::Time const& end_time, bool const& reduce_overlap) : view_revision_(0), size_cache_(0), size_revision_(0), reduce_overlap_(reduce_overlap) {
-	addQuery(bag, start_time, end_time);
+    addQuery(bag, start_time, end_time);
 }
 
 View::View(Bag const& bag, boost::function<bool(ConnectionInfo const*)> query, ros::Time const& start_time, ros::Time const& end_time, bool const& reduce_overlap) : view_revision_(0), size_cache_(0), size_revision_(0), reduce_overlap_(reduce_overlap) {
-	addQuery(bag, query, start_time, end_time);
+    addQuery(bag, query, start_time, end_time);
 }
 
 View::~View() {
@@ -226,7 +226,7 @@ View::iterator View::begin() {
 //! Default constructed iterator signifies end
 View::iterator View::end() { return iterator(this, true); }
 
-uint32_t View::size() { 
+uint32_t View::size() {
 
   update();
 
@@ -249,7 +249,7 @@ void View::addQuery(Bag const& bag, ros::Time const& start_time, ros::Time const
     if ((bag.getMode() & bagmode::Read) != bagmode::Read)
         throw BagException("Bag not opened for reading");
 
-	boost::function<bool(ConnectionInfo const*)> query = TrueQuery();
+    boost::function<bool(ConnectionInfo const*)> query = TrueQuery();
 
     queries_.push_back(new BagQuery(&bag, Query(query, start_time, end_time), bag.bag_revision_));
 
@@ -302,7 +302,7 @@ void View::updateQueries(BagQuery* q) {
             bool found = false;
             for (vector<MessageRange*>::iterator k = ranges_.begin(); k != ranges_.end(); k++) {
                 MessageRange* r = *k;
-                
+
                 // If the topic and query are already in our ranges, we update
                 if (r->bag_query == q && r->connection_info->id == connection->id) {
                     r->begin = begin;