Clang warning fixes

imgui_demo.cpp

@@ -20,10 +20,11 @@
 #define snprintf _snprintf
 #endif
 #ifdef __clang__
-#pragma clang diagnostic ignored "-Wint-to-void-pointer-cast" // warning : cast to 'void *' from smaller integer type 'int'
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"    // warning : 'xx' is deprecated: The POSIX name for this item.. // for strdup used in demo code (so user can copy & paste the code)
+#pragma clang diagnostic ignored "-Wint-to-void-pointer-cast"   // warning : cast to 'void *' from smaller integer type 'int'
 #endif
 #ifdef __GNUC__
-#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"      // warning: cast to pointer from integer of different size
+#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"          // warning: cast to pointer from integer of different size
 #endif
 
 // Play it nice with Windows users. Notepad in 2015 still doesn't display text data with Unix-style \n.