tolerate None return from get_line

rust-lang · Jan 17, 2017 · d82d4b6 · d82d4b6
1 parent 2bade81
commit d82d4b6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/libsyntax/json.rs b/src/libsyntax/json.rs
@@ -296,7 +296,7 @@ impl DiagnosticSpanLine {
                          h_end: usize)
                          -> DiagnosticSpanLine {
         DiagnosticSpanLine {
-            text: fm.get_line(index).unwrap().to_owned(),
+            text: fm.get_line(index).unwrap_or("").to_owned(),
             highlight_start: h_start,
             highlight_end: h_end,
         }