Fix git branch name colouring

Colouring fixed when there are some changes in a branch

vendor/clink.lua

@@ -208,11 +208,10 @@ end
  -- @return {bool}
 ---
 function get_git_status()
-    local file = io.popen("git diff --quiet --ignore-submodules HEAD 2>nul")
-    -- This will get a table with some return stuff
-    -- rc[3] will be the signal, 0 or 1
-    local rc = {file:close()}
-    return rc[3] == 0
+    for line in io.popen("git status --porcelain 2>nul"):lines() do
+        return false
+    end
+    return true
 end
 
 function git_prompt_filter()