[PATCH 1/1] shell32: Fix parsing empty arguments in parse_dde_command().

[Zebediah Figura]

From: Zebediah Figura

This fixes a hang in Microsoft Visual C++ 1.52 installation.
---
 dlls/shell32/dde.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/shell32/dde.c b/dlls/shell32/dde.c
index dcaf641f8f4..976dc2e394a 100644
--- a/dlls/shell32/dde.c
+++ b/dlls/shell32/dde.c
@@ -391,7 +391,7 @@ static DWORD parse_dde_command(HSZ hszTopic, WCHAR *command)
                 else
                 {
                     if (!(p = wcspbrk(command, L",()[]"))) goto error;
-                    while (p[-1] == ' ') p--;
+                    while (p > command && p[-1] == ' ') p--;
                 }

new_argv = realloc(argv, (argc + 1) * sizeof(*argv));