[clang-format] Fix clang-format issue with 'new' and 'delete' keywords in C files (#85470)

This resolves an issue in clang-format where `new` and `delete` were
incorrectly formatted as keywords in C files. The fix modifies
`TokenAnnotator::spaceRequiredBetween` to handle `new` and `delete` when
used as identifiers for function pointers in structs in C code.

clang/lib/Format/TokenAnnotator.cpp

@@ -4613,7 +4613,7 @@ bool TokenAnnotator::spaceRequiredBetween(const AnnotatedLine &Line,
       return Style.SpaceBeforeParensOptions.AfterFunctionDefinitionName ||
              spaceRequiredBeforeParens(Right);
     }
-    if (!Left.Previous || Left.Previous->isNot(tok::period)) {
+    if (!Left.Previous || !Left.Previous->isOneOf(tok::period, tok::arrow)) {
       if (Left.isOneOf(tok::kw_try, Keywords.kw___except, tok::kw_catch)) {
         return Style.SpaceBeforeParensOptions.AfterControlStatements ||
                spaceRequiredBeforeParens(Right);

clang/unittests/Format/FormatTest.cpp

@@ -11475,6 +11475,11 @@ TEST_F(FormatTest, UnderstandsNewAndDelete) {
                "void new (link p);\n"
                "void delete (link p);");
 
+  verifyFormat("{ p->delete(); }\n"
+               "{ p->new(); }",
+               "{ p->delete (); }\n"
+               "{ p->new (); }");
+
   FormatStyle AfterPlacementOperator = getLLVMStyle();
   AfterPlacementOperator.SpaceBeforeParens = FormatStyle::SBPO_Custom;
   EXPECT_TRUE(