dlls/user32: Ensure that GetTabbedTextExtents returns 0 when nCount is 0. This resoves the issue reported in bug #26900.

[Tim Hentenaar]

---
 dlls/user32/text.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/dlls/user32/text.c b/dlls/user32/text.c
index e34877f..4938a49 100644
--- a/dlls/user32/text.c
+++ b/dlls/user32/text.c
@@ -1281,6 +1281,10 @@ static LONG TEXT_TabbedTextOut( HDC hdc, INT x, INT y, LPCWSTR lpstr,
     int i, j;
     int start = x;
 
+    /* Windows XP returns 0 if either of these are 0. */
+    if (!lpstr || count == 0)
+	    return 0;
+
     if (!lpTabPos)
         cTabStops=0;
 
-- 
1.7.2.2


--=-2K0ICwkUFVjvk9drzvCv--