[PATCH 2/3] dlls/gdiplus: Empty path before lengthening it in GdipFlattenPath.

[David Kahurani]

From: David Kahurani

Empty the path, albeit temporarily before trying to lengthen
the path because the data contained in it is at this point,
unless an error happens, invalid. This avoids a situation where
lengthening code, assuming the data in the path is valid
proceeds to lengthen the path further.

Signed-off-by: David Kahurani 
---
 dlls/gdiplus/graphicspath.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/gdiplus/graphicspath.c b/dlls/gdiplus/graphicspath.c
index 7b85355773a..ea9f1ed9aed 100644
--- a/dlls/gdiplus/graphicspath.c
+++ b/dlls/gdiplus/graphicspath.c
@@ -1333,7 +1333,7 @@ GpStatus WINGDIPAPI GdipFlattenPath(GpPath *path, GpMatrix* matrix, REAL flatnes
 {
     path_list_node_t *list, *node;
     GpPointF pt;
-    INT i = 1;
+    INT i = 1, old_count;
     INT startidx = 0;
     GpStatus stat;

@@ -1345,6 +1345,7 @@ GpStatus WINGDIPAPI GdipFlattenPath(GpPath *path, GpMatrix* matrix, REAL flatnes
     if(path->pathdata.Count == 0)
         return Ok;

+    old_count = path->pathdata.Count;
     stat = GdipTransformPath(path, matrix);
     if(stat != Ok)
         return stat;
@@ -1407,6 +1408,7 @@ GpStatus WINGDIPAPI GdipFlattenPath(GpPath *path, GpMatrix* matrix, REAL flatnes

/* store path data back */
     i = path_list_count(list);
+    path->pathdata.Count = 0;
     if(!lengthen_path(path, i))
         goto memout;
     path->pathdata.Count = i;
@@ -1422,6 +1424,7 @@ GpStatus WINGDIPAPI GdipFlattenPath(GpPath *path, GpMatrix* matrix, REAL flatnes
     return Ok;

memout:
+    path->pathdata.Count = old_count;
     free_path_list(list);
     return OutOfMemory;
 }