fixing code that relied on implicit string construction

chrome/src/nsChromeRegistry.cpp

@@ -501,7 +501,7 @@ nsChromeRegistry::ConvertChromeURL(nsIURI* aChromeURL, char** aResult)
   rv = GetBaseURL(package, provider, finalURL);
 #ifdef DEBUG
   if (NS_FAILED(rv)) {
-    nsCAutoString msg = "chrome: failed to get base url";
+    nsCAutoString msg("chrome: failed to get base url");
     nsXPIDLCString url;
     rv = aChromeURL->GetSpec(getter_Copies(url));
     if (NS_SUCCEEDED(rv)) {

extensions/wallet/src/wallet.cpp

@@ -2171,7 +2171,7 @@ wallet_GetPrefills(
         if (FieldToValue(field, schema, value, itemList, index) == 0) {
           if (value.IsEmpty() && nsnull != itemList) {
             /* pick first of a set of synonymous values */
-            nsAutoString encryptedValue = ((wallet_Sublist *)itemList->ElementAt(0))->item;
+            nsAutoString encryptedValue( ((wallet_Sublist *)itemList->ElementAt(0))->item );
             if (NS_FAILED(Wallet_Decrypt(encryptedValue, value))) {
               NS_RELEASE(inputElement);
               return -1;

rdf/chrome/src/nsChromeRegistry.cpp

@@ -501,7 +501,7 @@ nsChromeRegistry::ConvertChromeURL(nsIURI* aChromeURL, char** aResult)
   rv = GetBaseURL(package, provider, finalURL);
 #ifdef DEBUG
   if (NS_FAILED(rv)) {
-    nsCAutoString msg = "chrome: failed to get base url";
+    nsCAutoString msg("chrome: failed to get base url");
     nsXPIDLCString url;
     rv = aChromeURL->GetSpec(getter_Copies(url));
     if (NS_SUCCEEDED(rv)) {