Squashed compiler wng from MSVC6.
diff --git a/Modules/zipimport.c b/Modules/zipimport.c
index ec5a529..863ce42 100644
--- a/Modules/zipimport.c
+++ b/Modules/zipimport.c
@@ -412,7 +412,7 @@
 	path = buf;
 #endif
 	len = PyString_Size(self->archive);
-	if (len < strlen(path) &&
+	if ((size_t)len < strlen(path) &&
 	    strncmp(path, PyString_AsString(self->archive), len) == 0 &&
 	    path[len] == SEP) {
 		path = path + len + 1;