tree.h: Commentary typo fix

2015-04-08  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

	* tree.h (CONVERT_EXPR_P): Commentary typo fix.

From-SVN: r221930

gcc/ChangeLog

+2015-04-08  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>
+
+	* tree.h (CONVERT_EXPR_P): Commentary typo fix.
+
 2015-04-08  Gerald Pfeifer  <gerald@pfeifer.com>
 
 	* doc/extend.texi (__sync Builtins): Fix grammar.

gcc/tree.h

@@ -428,7 +428,7 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int,
 #define CONVERT_EXPR_CODE_P(CODE)				\
   ((CODE) == NOP_EXPR || (CODE) == CONVERT_EXPR)
 
-/* Similarly, but accept an expressions instead of a tree code.  */
+/* Similarly, but accept an expression instead of a tree code.  */
 #define CONVERT_EXPR_P(EXP)	CONVERT_EXPR_CODE_P (TREE_CODE (EXP))
 
 /* Generate case for NOP_EXPR, CONVERT_EXPR.  */