[clang] Remove double semicolons. NFC.

[efriedma]

You don't need to ask for review for a trivial change like this.

lib/AST/Type.cpp

Optional<ArrayRef<QualType>> Type::getObjCSubstitutions(
 
   // Find the underlying object type.
   const ObjCObjectType *objectType;
   if (const auto *objectPointerType = getAs<ObjCObjectPointerType>()) {
     objectType = objectPointerType->getObjectType();
   } else if (getAs<BlockPointerType>()) {
     ASTContext &ctx = dc->getParentASTContext();
     objectType = ctx.getObjCObjectType(ctx.ObjCBuiltinIdTy, { }, { })
-                   ->castAs<ObjCObjectType>();;
+                   ->castAs<ObjCObjectType>();
   } else {
     objectType = getAs<ObjCObjectType>();
   }
 
   /// Extract the class from the receiver object type.
   ObjCInterfaceDecl *curClassDecl = objectType ? objectType->getInterface()
                                                : nullptr;
   if (!curClassDecl) {

lib/Sema/SemaType.cpp

if (auto objcObjectPtr = type->getAs<ObjCObjectPointerType>()) {
 
       break;
     }
 
     // Look at Objective-C class types.
     if (auto objcClass = type->getAs<ObjCInterfaceType>()) {
       if (objcClass->getInterface()->getIdentifier() == S.getNSErrorIdent()) {
         if (numNormalPointers == 2 && numTypeSpecifierPointers < 2)
-          return PointerDeclaratorKind::NSErrorPointerPointer;;
+          return PointerDeclaratorKind::NSErrorPointerPointer;
       }
 
       break;
     }
 
     // If at this point we haven't seen a pointer, we won't see one.
     if (numNormalPointers == 0)
       return PointerDeclaratorKind::NonPointer;