(main): Explicitly check result of message box for OK.

1 files changed, 4 insertions, 1 deletions

diff --git a/nt/addpm.c b/nt/addpm.c
index 2e536df03a7..a916c87e6bf 100644
--- a/nt/addpm.c
+++ b/nt/addpm.c
@@ -152,9 +152,12 @@ main (argc, argv)
 
       /* Tell user what we are going to do.  */
       {
+        int result;
+
         char msg[ MAX_PATH ];
         sprintf (msg, "Install Emacs at %s?\n", emacs_path);
-        if (!MessageBox (NULL, msg, "Install Emacs", MB_OKCANCEL | MB_ICONQUESTION))
+        result = MessageBox (NULL, msg, "Install Emacs", MB_OKCANCEL | MB_ICONQUESTION);
+        if (result != IDOK)
           {
             fprintf (stderr, "Install cancelled\n");
             exit (1);