Fix deadlock if plCrashHandler is not running

Only wait for the crash server to do its job if it's attached. Silent
failures are evil, but it's better than hanging forever.

Sources/Plasma/FeatureLib/pfCrashHandler/plCrashCli.cpp

@@ -134,5 +134,7 @@ void plCrashCli::ReportCrash(PEXCEPTION_POINTERS e)
 
 void plCrashCli::WaitForHandle()
 {
-    fHandled->Wait();
+    // Don't deadlock... Only wait if the CrashSrv is attached
+    if (fLink && fLink->fSrvReady)
+        fHandled->Wait();
 }