[sanitizer] Plug a memory leak in symbolization code.

llvm-svn: 235411

compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc

@@ -67,6 +67,7 @@ static void ParseSymbolizePCOutput(const char *str, SymbolizedStack *res) {
     CHECK(function_name);
     if (function_name[0] == '\0') {
       // There are no more frames.
+      InternalFree(function_name);
       break;
     }
     SymbolizedStack *cur;