[IR] Upgrade comment token in objc retain release marker

Older compiler issued '#' instead of ';'


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329248 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -4788,6 +4788,9 @@ Error BitcodeReader::materializeModule() {
   UpgradeDebugInfo(*TheModule);
 
   UpgradeModuleFlags(*TheModule);
+
+  UpgradeRetainReleaseMarker(*TheModule);
+
   return Error::success();
 }