Do a case-insensitive compare on core http headers in windows network code

modules/juce_core/native/juce_win32_Network.cpp

@@ -53,7 +53,7 @@ public:
             if (! isError())
             {
                 DWORD bufferSizeBytes = 4096;
-                StringPairArray dataHeaders (false);
+                StringPairArray dataHeaders;
 
                 for (;;)
                 {