Fix typo in comment.

From-SVN: r6273

gcc/c-typeck.c

@@ -1942,7 +1942,7 @@ build_binary_op (code, orig_op0, orig_op1, convert_p)
 	    resultcode = RDIV_EXPR;
 	  else
 	    /* When dividing two signed integers, you have to promote to int.
-	       E.g. (short) -32868 / (short) -1 doesn't fit in a short.  */
+	       E.g. (short) -32768 / (short) -1 doesn't fit in a short.  */
 	    shorten = TREE_UNSIGNED (orig_op0);
 	  common = 1;
 	}