Make FileCheckNumericVariable::getDefLineNumber const. NFC

Fixes cppcheck warning.

diff --git a/llvm/lib/Support/FileCheckImpl.h b/llvm/lib/Support/FileCheckImpl.h
index 06ce8301cec4b5fe96150aca9f1b7e4debe6ad95..0fd8523bef8fe51886370ee0083621cc85ac9076 100644 (file)
--- a/llvm/lib/Support/FileCheckImpl.h
+++ b/llvm/lib/Support/FileCheckImpl.h
@@ -114,7 +114,7 @@ public:
 
   /// \returns the line number where this variable is defined, if any, or None
   /// if defined before input is parsed.
-  Optional<size_t> getDefLineNumber() { return DefLineNumber; }
+  Optional<size_t> getDefLineNumber() const { return DefLineNumber; }
 };
 
 /// Class representing the use of a numeric variable in the AST of an