win32: shrink code to detect .exe files

Add a function (has_exe_suffix) to replace explicit code to check
if a filename ends with '.exe. or '.com'.

Also shrink code that checks for '.exe' or '.com' on PATH in shell's
find_command function.

1 files changed, 1 insertions, 4 deletions

diff --git a/win32/process.c b/win32/process.c
index 5eb52828b..919d46043 100644
--- a/win32/process.c
+++ b/win32/process.c
@@ -52,10 +52,7 @@ parse_interpreter(const char *cmd, char ***opts, int *nopts)
         *opts = opt;
 
         /* don't even try a .exe */
-        n = strlen(cmd);
-        if (n >= 4 &&
-            (!strcasecmp(cmd+n-4, ".exe") ||
-             !strcasecmp(cmd+n-4, ".com")))
+        if (has_exe_suffix(cmd))
                 return NULL;
 
         fd = open(cmd, O_RDONLY);