Bug 225120 Remove compiler warnings

patch by arne.anka@stupido.com r=dbaron sr=bz

content/xul/templates/src/nsXULContentUtils.cpp

@@ -333,8 +333,6 @@ nsXULContentUtils::MakeElementURI(nsIDocument* aDocument, const nsAString& aElem
         CopyUTF16toUTF8(aElementID, aURI);
     }
     else {
-        nsresult rv;
-
         nsIURI *docURL = aDocument->GetBaseURL();
 
         // XXX Urgh. This is so broken; I'd really just like to use
@@ -351,7 +349,7 @@ nsXULContentUtils::MakeElementURI(nsIDocument* aDocument, const nsAString& aElem
         AppendUTF16toUTF8(aElementID, aURI);
 #else
         nsXPIDLCString spec;
-        rv = NS_MakeAbsoluteURI(nsCAutoString(aElementID), docURL, getter_Copies(spec));
+        nsresult rv = NS_MakeAbsoluteURI(nsCAutoString(aElementID), docURL, getter_Copies(spec));
         if (NS_SUCCEEDED(rv)) {
             aURI = spec;
         }
@@ -390,8 +388,6 @@ nsXULContentUtils::MakeElementID(nsIDocument* aDocument, const nsAString& aURI,
 {
     // Convert a URI into an element ID that can be accessed from the
     // DOM APIs.
-    nsresult rv;
-
     nsCAutoString spec;
     aDocument->GetBaseURL()->GetSpec(spec);
 

layout/base/nsPresContext.cpp

@@ -1381,8 +1381,6 @@ nsPresContext::LoadImage(nsIURI* aURL,
 {
   // look and see if we have a loader for the target frame.
 
-  nsresult rv;
-
   nsVoidKey key(aTargetFrame);
   nsImageLoader *loader = NS_REINTERPRET_CAST(nsImageLoader*, mImageLoaders.Get(&key)); // addrefs
 

layout/base/src/nsPresContext.cpp

@@ -1381,8 +1381,6 @@ nsPresContext::LoadImage(nsIURI* aURL,
 {
   // look and see if we have a loader for the target frame.
 
-  nsresult rv;
-
   nsVoidKey key(aTargetFrame);
   nsImageLoader *loader = NS_REINTERPRET_CAST(nsImageLoader*, mImageLoaders.Get(&key)); // addrefs