Fix error message + a code format issue

Author: Erich Keane

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -10938,7 +10938,7 @@ def err_sycl_kernel_incorrectly_named : Error<
   "|name is invalid. Unscoped enum requires fixed underlying type"
   "}0">;
 def err_sycl_kernel_not_function_object
-    : Error<"kernel parameter is required to be a lambda or function object">;
+    : Error<"kernel parameter must be a lambda or function object">;
 def err_sycl_restrict : Error<
   "SYCL kernel cannot "
 "%select{use a non-const global variable"

clang/lib/Sema/SemaSYCL.cpp

@@ -2034,14 +2034,14 @@ void Sema::CheckSYCLKernelCall(FunctionDecl *KernelFunc, SourceRange CallLoc,
       }
   }
 
-  SyclKernelFieldChecker checker(*this);
+  SyclKernelFieldChecker Checker(*this);
 
   KernelObjVisitor Visitor{*this};
   DiagnosingSYCLKernel = true;
-  Visitor.VisitRecordBases(KernelObj, checker);
-  Visitor.VisitRecordFields(KernelObj, checker);
+  Visitor.VisitRecordBases(KernelObj, Checker);
+  Visitor.VisitRecordFields(KernelObj, Checker);
   DiagnosingSYCLKernel = false;
-  if (!checker.isValid())
+  if (!Checker.isValid())
     KernelFunc->setInvalidDecl();
 }
 

clang/test/SemaSYCL/kernel-not-functor.cpp

@@ -7,7 +7,7 @@ __attribute__((sycl_kernel)) void kernel(F kernelFunc) {
 
 template <typename Name, typename F>
 void uses_kernel(F kernelFunc) {
-  // expected-error@+1{{kernel parameter is required to be a lambda or function object}}
+  // expected-error@+1{{kernel parameter must be a lambda or function object}}
   kernel<Name>(kernelFunc);
 }