Fix spelling error in a log message (bug 443520).

xpcom/components/nsComponentManager.cpp

@@ -718,9 +718,9 @@ nsresult nsComponentManagerImpl::Shutdown(void)
     if (mRegistryDirty) {
         nsresult rv = WritePersistentRegistry();
         if (NS_FAILED(rv)) {
-            PR_LOG(nsComponentManagerLog, PR_LOG_ERROR, ("nsComponentManager: Could not write out perisistant registry."));
+            PR_LOG(nsComponentManagerLog, PR_LOG_ERROR, ("nsComponentManager: Could not write out persistent registry."));
 #ifdef DEBUG
-            printf("Could not write out perisistant registry!\n");
+            printf("Could not write out persistent registry!\n");
 #endif
         }
     }