Update to XCode 10

shared_random_generator.xcodeproj/project.pbxproj

@@ -112,6 +112,7 @@
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = CDED6A3921B2F5A700AB91D0;
 			productRefGroup = CDED6A4321B2F5A700AB91D0 /* Products */;