Check sh.exe on OS/2 intead of sh

main.c

@@ -263,8 +263,13 @@ main_init(int argc, const char *argv[], Source **sp, struct block **lp)
 			return (1);
 
 #if defined(MKSH_BINSHPOSIX) || defined(MKSH_BINSHREDUCED)
+#ifdef __OS2__
+#define EXE_EXT	".exe"
+#else
+#define EXE_EXT	""
+#endif
 		/* are we called as -sh or /bin/sh or so? */
-		if (!strcmp(ccp, "sh")) {
+		if (!strcmp(ccp, "sh" EXE_EXT)) {
 			/* either also turns off braceexpand */
 #ifdef MKSH_BINSHPOSIX
 			/* enable better POSIX conformance */