MVK: disable assertion in release builds

MobileVLCKit.xcodeproj/project.pbxproj

@@ -324,6 +324,7 @@
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				ARCHS = "$(ARCHS_STANDARD_INCLUDING_64_BIT)";
 				DSTROOT = /tmp/MobileVLCKit.dst;
+				ENABLE_NS_ASSERTIONS = NO;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = MobileVLCKit_Prefix.pch;
 				GCC_SYMBOLS_PRIVATE_EXTERN = YES;