Bug 453545: InstallTrigger Broken when doing multiple signed XPI installs. r=biesi, a1.9.1b2=beltzner

modules/libjar/nsJAR.cpp

@@ -203,6 +203,7 @@ nsJAR::Close()
   }
 
   mParsedManifest = PR_FALSE;
+  mManifestData.Reset();
   mGlobalStatus = JAR_MANIFEST_NOT_PARSED;
   mTotalItemsInManifest = 0;