Merge branch 'fixmain' into 'master'

Fix logfiles crashing Windoze (resolves #102)

Closes #102

See merge request STJr/SRB2!591

src/m_misc.c

@@ -2457,6 +2457,8 @@ int M_PathParts(const char *path)
 	int n;
 	const char *p;
 	const char *t;
+	if (path == NULL)
+		return 0;
 	for (n = 0, p = path ;; ++n)
 	{
 		t = p;