Fix check for navigating upwards from http Paths

Common/File/Path.cpp

@@ -320,7 +320,7 @@ bool Path::CanNavigateUp() const {
 	}
 	if (type_ == PathType::HTTP) {
 		size_t rootSlash = path_.find_first_of('/', strlen("https://"));
-		if (rootSlash == path_.npos || path_.size() < rootSlash + 1) {
+		if (rootSlash == path_.npos || path_.size() == rootSlash + 1) {
 			// This means, "http://server" or "http://server/".  Can't go up.
 			return false;
 		}