fixed a bug where if a plugin errored during the instantiation process, then its index could be reported as -1 from debug messages

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%402156

core/DebugReporter.cpp

@@ -181,6 +181,9 @@ int DebugReport::_GetPluginIndex(IPluginContext *ctx)
 	}
 
 	iter->Release();
-	return -1;
+
+	/* If we don't know which plugin this is, it's one being loaded.  Fake its index for now. */
+
+	return g_PluginSys.GetPluginCount() + 1;
 }