Fix leak of coverage.c:da_file_name

gcc/
2013-10-10  David Malcolm  <dmalcolm@redhat.com>

	* coverage.c (coverage_finish): Fix leak of da_file_name.

From-SVN: r203388

gcc/ChangeLog

+2013-10-10  David Malcolm  <dmalcolm@redhat.com>
+
+	* coverage.c (coverage_finish): Fix leak of da_file_name.
+
 2013-10-10  Jan Hubicka  <jh@suse.cz>
 
 	* config/i386/x86-tune.def: Enable X86_TUNE_SSE_TYPELESS_STORES

gcc/coverage.c

@@ -1209,6 +1209,9 @@ coverage_finish (void)
 	fn_ctor = coverage_obj_fn (fn_ctor, fn->fn_decl, fn);
       coverage_obj_finish (fn_ctor);
     }
+
+  XDELETEVEC (da_file_name);
+  da_file_name = NULL;
 }
 
 #include "gt-coverage.h"