Disambiguate between a declaration or an expression, in the 'for-init-statement' part of a 'for' statement.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57112 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseStmt.cpp b/lib/Parse/ParseStmt.cpp
index 1f6eae1..228bc48 100644
--- a/lib/Parse/ParseStmt.cpp
+++ b/lib/Parse/ParseStmt.cpp
@@ -813,7 +813,7 @@
   if (Tok.is(tok::semi)) {  // for (;
     // no first part, eat the ';'.
     ConsumeToken();
-  } else if (isDeclarationSpecifier()) {  // for (int X = 4;
+  } else if (isSimpleDeclaration()) {  // for (int X = 4;
     // Parse declaration, which eats the ';'.
     if (!C99orCXX)   // Use of C99-style for loops in C90 mode?
       Diag(Tok, diag::ext_c99_variable_decl_in_for_loop);