[PATCH 1/1] cmd: Do not set enviroment variable when no input is provided by set /p command.

[Vijay Kiran Kamuju]

From: Vijay Kiran Kamuju

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55662
---
 programs/cmd/builtins.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/programs/cmd/builtins.c b/programs/cmd/builtins.c
index 708e3c6dce6..d3182be99ea 100644
--- a/programs/cmd/builtins.c
+++ b/programs/cmd/builtins.c
@@ -3161,7 +3161,7 @@ void WCMD_setshow_env (WCHAR *s) {
       if (string[count-2] == '\r') string[count-2] = '\0'; /* Under Windoze we get CRLF! */
       WINE_TRACE("set /p: Setting var '%s' to '%s'\n", wine_dbgstr_w(s),
                  wine_dbgstr_w(string));
-      SetEnvironmentVariableW(s, string);
+      if(wcslen(string)) SetEnvironmentVariableW(s, string);
     }

/* See if /A supplied, and if so calculate the results of all the expressions */