Only install after MCS success

If MCS dies in the middle of a call during install, only proceed if the
call was successful. Otherwise wait for the max retries to be reached
and run the failure handling code there.

Change-Id: I00a27ea91046ea6521a3cff5e5ffe2c71b2b5bb4

services/java/com/android/server/PackageManagerService.java

@@ -5019,7 +5019,12 @@ class PackageManagerService extends IPackageManager.Stub {
 
         @Override
         void handleReturnCode() {
-            processPendingInstall(mArgs, mRet);
+            // If mArgs is null, then MCS couldn't be reached. When it
+            // reconnects, it will try again to install. At that point, this
+            // will succeed.
+            if (mArgs != null) {
+                processPendingInstall(mArgs, mRet);
+            }
         }
 
         @Override