"GCC_NO_COMMON_BLOCKS = YES" for silencing newer Xcode warning

Base32.xcodeproj/project.pbxproj

@@ -581,6 +581,7 @@
 			buildSettings = {
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
+				GCC_NO_COMMON_BLOCKS = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MACOSX_DEPLOYMENT_TARGET = 10.9;
 				ONLY_ACTIVE_ARCH = YES;
@@ -596,6 +597,7 @@
 			buildSettings = {
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
+				GCC_NO_COMMON_BLOCKS = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MACOSX_DEPLOYMENT_TARGET = 10.9;
 				TARGETED_DEVICE_FAMILY = "1,2";