Apply suggestions from vbvictor.

Author: dl8sd11

clang-tools-extra/clang-tidy/portability/AvoidPragmaOnceCheck.cpp

@@ -22,18 +22,15 @@ class PragmaOnceCallbacks : public PPCallbacks {
   void PragmaDirective(SourceLocation Loc,
                        PragmaIntroducerKind Introducer) override {
     auto Str = llvm::StringRef(SM.getCharacterData(Loc));
-    if (!Str.consume_front("#")) {
+    if (!Str.consume_front("#"))
       return;
-    }
     Str = Str.trim();
-    if (!Str.consume_front("pragma")) {
+    if (!Str.consume_front("pragma"))
       return;
-    }
     Str = Str.trim();
-    if (Str.starts_with("once")) {
+    if (Str.starts_with("once"))
       Check->diag(Loc,
                   "avoid 'pragma once' directive; use include guards instead");
-    }
   }
 
 private:

clang-tools-extra/docs/clang-tidy/checks/portability/avoid-pragma-once.rst

@@ -8,7 +8,7 @@ include guards (``#ifndef``/``#define``/``#endif``) for improved portability.
 
 ``#pragma once`` is a non-standard extension, despite being widely supported
 by modern compilers. Relying on it can lead to portability issues in
-environments.
+some environments.
 
 Some older or specialized C/C++ compilers, particularly in embedded systems,
 may not fully support ``#pragma once``.