Revert "Fixed invalid read"

laruence · laruence · commit c75d245e82ec · 2015-07-08T22:34:27.000+08:00
I must be confused while switching from master to 5.6 This reverts commit 94957a7.
diff --git a/ext/standard/exec.c b/ext/standard/exec.c
@@ -115,7 +115,7 @@ PHPAPI int php_exec(int type, char *cmd, zval *array, zval *return_value TSRMLS_
 			} else if (type == 2) {
 				/* strip trailing whitespaces */
 				l = bufl;
-				while (--l >= 0 && isspace(((unsigned char *)buf)[l]));
+				while (l-- && isspace(((unsigned char *)buf)[l]));
 				if (l != (int)(bufl - 1)) {
 					bufl = l + 1;
 					buf[bufl] = '\0';
@@ -128,7 +128,7 @@ PHPAPI int php_exec(int type, char *cmd, zval *array, zval *return_value TSRMLS_
 			/* strip trailing whitespaces if we have not done so already */
 			if ((type == 2 && buf != b) || type != 2) {
 				l = bufl;
-				while (--l >= 0 && isspace(((unsigned char *)buf)[l]));
+				while (l-- && isspace(((unsigned char *)buf)[l]));
 				if (l != (int)(bufl - 1)) {
 					bufl = l + 1;
 					buf[bufl] = '\0';
