Fix thinko.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94922 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index 5e4de1a..28f7371 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -310,7 +310,7 @@
       if (NameEnd == CurPtr)
         return diag::err_asm_empty_symbolic_operand_name;
 
-      llvm::StringRef SymbolicName(CurPtr, NameEnd - CurPtr - 1);
+      llvm::StringRef SymbolicName(CurPtr, NameEnd - CurPtr);
 
       int N = getNamedOperand(SymbolicName);
       if (N == -1) {