updated for version 7.2.365
Problem:    MS-Windows with MingW: "File->Save As" does not work. (John
            Marriott)
Solution:   Correctly fill in structure size. (Andy Kittner)
diff --git a/src/gui_w48.c b/src/gui_w48.c
index ddaf1fb..477acfa 100644
--- a/src/gui_w48.c
+++ b/src/gui_w48.c
@@ -3345,7 +3345,7 @@
 #ifdef OPENFILENAME_SIZE_VERSION_400
     /* be compatible with Windows NT 4.0 */
     /* TODO: what to use for OPENFILENAMEW??? */
-    fileStruct.lStructSize = sizeof(OPENFILENAME_SIZE_VERSION_400);
+    fileStruct.lStructSize = OPENFILENAME_SIZE_VERSION_400;
 #else
     fileStruct.lStructSize = sizeof(fileStruct);
 #endif
@@ -3506,7 +3506,7 @@
     memset(&fileStruct, 0, sizeof(OPENFILENAME));
 #ifdef OPENFILENAME_SIZE_VERSION_400
     /* be compatible with Windows NT 4.0 */
-    fileStruct.lStructSize = sizeof(OPENFILENAME_SIZE_VERSION_400);
+    fileStruct.lStructSize = OPENFILENAME_SIZE_VERSION_400;
 #else
     fileStruct.lStructSize = sizeof(fileStruct);
 #endif