bug 1225682 - (still) don't use nsAutoString as class member variable in security/manager/ r=mgoodwin

MozReview-Commit-ID: LvFQdleIuEx

--HG--
extra : rebase_source : 2ac7779e355ffe48f61084aeb76e741e64cea6f6

security/manager/ssl/nsNSSComponent.h

@@ -210,7 +210,7 @@ private:
 #endif
 
 #ifdef DEBUG
-  nsAutoString mTestBuiltInRootHash;
+  nsString mTestBuiltInRootHash;
 #endif
   nsString mContentSigningRootHash;