Mingw: verify both ends of the pipe () call

The code to open and test the second end of the pipe clearly imitates
the code for the first end. A little too closely, though... Let's fix
the obvious copy-edit bug.

Signed-off-by: Jose F. Morales <[email protected]>
Signed-off-by: Johannes Schindelin <[email protected]>
Reviewed-by: Jonathan Nieder <[email protected]>
Acked-by: Johannes Sixt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jfmc

compat/mingw.c

@@ -681,7 +681,7 @@ int pipe(int filedes[2])
 		return -1;
 	}
 	filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
-	if (filedes[0] < 0) {
+	if (filedes[1] < 0) {
 		close(filedes[0]);
 		CloseHandle(h[1]);
 		return -1;