[clang-format][NFC] Move static variable in scope

Let only the JS/TS users pay for the initialistation.

Differential Revision: https://reviews.llvm.org/D115068

GitOrigin-RevId: 8d1c85454daa40bd663d0ef4e8262fe6fc0f21ad
diff --git a/lib/Format/ContinuationIndenter.cpp b/lib/Format/ContinuationIndenter.cpp
index 5073f51..cbb8d50 100644
--- a/lib/Format/ContinuationIndenter.cpp
+++ b/lib/Format/ContinuationIndenter.cpp
@@ -493,14 +493,14 @@
       return true;
   }
 
-  // Break after the closing parenthesis of TypeScript decorators before
-  // functions, getters and setters.
-  static const llvm::StringSet<> BreakBeforeDecoratedTokens = {"get", "set",
-                                                               "function"};
   if (Style.Language == FormatStyle::LK_JavaScript &&
-      BreakBeforeDecoratedTokens.contains(Current.TokenText) &&
       Previous.is(tok::r_paren) && Previous.is(TT_JavaAnnotation)) {
-    return true;
+    // Break after the closing parenthesis of TypeScript decorators before
+    // functions, getters and setters.
+    static const llvm::StringSet<> BreakBeforeDecoratedTokens = {"get", "set",
+                                                                 "function"};
+    if (BreakBeforeDecoratedTokens.contains(Current.TokenText))
+      return true;
   }
 
   // If the return type spans multiple lines, wrap before the function name.