Bug 801803 - nsresult as enum class creates warnings in test files r=ehsan

netwerk/test/TestPageLoad.cpp

@@ -28,7 +28,7 @@ nsresult auxLoad(char *uriBuf);
 #define RETURN_IF_FAILED(rv, ret, step) \
     PR_BEGIN_MACRO \
     if (NS_FAILED(rv)) { \
-        printf(">>> %s failed: rv=%x\n", step, rv); \
+        printf(">>> %s failed: rv=%x\n", step, static_cast<uint32_t>(rv)); \
         return ret;\
     } \
     PR_END_MACRO

rdf/tests/rdfcat/rdfcat.cpp

@@ -47,7 +47,7 @@ static NS_DEFINE_CID(kRDFXMLDataSourceCID,  NS_RDFXMLDATASOURCE_CID);
 #define RETURN_IF_FAILED(rv, step) \
     PR_BEGIN_MACRO \
     if (NS_FAILED(rv)) { \
-        printf(">>> %s failed: rv=%x\n", step, rv); \
+        printf(">>> %s failed: rv=%x\n", step, static_cast<uint32_t>(rv)); \
         return 1;\
     } \
     PR_END_MACRO

rdf/tests/triplescat/triplescat.cpp

@@ -45,7 +45,7 @@
 #define RETURN_IF_FAILED(rv, step) \
     PR_BEGIN_MACRO \
     if (NS_FAILED(rv)) { \
-        printf(">>> %s failed: rv=%x\n", step, rv); \
+        printf(">>> %s failed: rv=%x\n", step, static_cast<uint32_t>(rv)); \
         return 1;\
     } \
     PR_END_MACRO