Don't pretend to be PLATFORM(IPHONE) or PLATFORM(IPHONE_SIMULATOR)

As that ends up triggering other code paths such as JIT on ARM.

Change-Id: I14238c0913bd60e07de5015a82bcde0ab08a3a19
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h

@@ -509,6 +509,7 @@
 #define WTF_PLATFORM_WIN 1
 #endif
 
+#if !PLATFORM(QT)
 /* PLATFORM(IPHONE) */
 /* FIXME: this is sometimes used as an OS switch and sometimes for higher-level things */
 #if (defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED) || (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
@@ -526,6 +527,7 @@
 #if !defined(WTF_PLATFORM_IPHONE)
 #define WTF_PLATFORM_IPHONE 0
 #endif
+#endif
 
 /* PLATFORM(ANDROID) */
 /* FIXME: this is sometimes used as an OS() switch, and other times to drive