[NFC][SpecialCaseList] Re-order methods (#163278)

To match lifetime usage order.

Co-authored-by: Tarun Prabhu <[email protected]>

Author: vitalybuka

llvm/include/llvm/Support/SpecialCaseList.h

@@ -164,6 +164,8 @@ class SpecialCaseList {
   public:
     LLVM_ABI Matcher(bool UseGlobs, bool RemoveDotSlash);
 
+    LLVM_ABI Error insert(StringRef Pattern, unsigned LineNumber);
+
     LLVM_ABI void
     match(StringRef Query,
           llvm::function_ref<void(StringRef Rule, unsigned LineNo)> Cb) const;
@@ -174,8 +176,6 @@ class SpecialCaseList {
       return R;
     }
 
-    LLVM_ABI Error insert(StringRef Pattern, unsigned LineNumber);
-
     std::variant<RegexMatcher, GlobMatcher> M;
     bool RemoveDotSlash;
   };