wrong example misguide user to catch panic

[Wander1024]

Signed-off-by: wander1024 yawhua1024@gmail.com

recovery should be placed the first.

#410
#215

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[codecov-commenter]

Codecov Report

Merging #414 (f2c1139) into master (315ddd9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #414   +/-   ##
=======================================
  Coverage   74.28%   74.28%           
=======================================
  Files          42       42           
  Lines        1357     1357           
=======================================
  Hits         1008     1008           
  Misses        295      295           
  Partials       54       54           

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[Wander1024]

@googlebot I signed it!

[johanbrandhorst]

LGTM

[johanbrandhorst]

Thanks for your contribution :). Sorry for the confusion here.

[ivanovaleksey]

With grpc_recovery in the first place I can see nothing in logger just this

srv := grpc.NewServer(grpc.UnaryInterceptor(
	grpc_middleware.ChainUnaryServer(
		grpc_recovery.UnaryServerInterceptor(),
		grpc_ctxtags.UnaryServerInterceptor(),
		grpc_zap.UnaryServerInterceptor(zapLogger),
	),
))

zap/grpclogger.go:92    [transport]transport: loopyWriter.run returning. connection error: desc = "transport is closing"        {"system": "grpc", "grpc_log": true}

How is it supposed to log a panic occurred?