Do not complain about wrong gclient config if there's no 'src' solution.

tools/check_git_config.py

Index: tools/check_git_config.py
diff --git a/tools/check_git_config.py b/tools/check_git_config.py
index f343ff2359d91034c508a195b0a13e2d862b2287..717ad80c7911b9095feae9666dd01cd1914e773f 100755
--- a/tools/check_git_config.py
+++ b/tools/check_git_config.py
@@ -150,8 +150,8 @@ def read_gclient_solution():
   try:
     env = {}
     execfile(GCLIENT_CONFIG, env, env)
-    for sol in env['solutions']:
-      if sol['name'] == 'src':
+    for sol in (env.get('solutions') or []):
+      if sol.get('name') == 'src':
         return sol.get('url'), sol.get('deps_file'), sol.get('managed')
     return None, None, None
   except Exception:
@@ -353,6 +353,9 @@ def check_git_config(conf, report_url, verbose):
 
 def check_gclient_config(conf):
   """Shows warning if gclient solution is not properly configured for git."""
+  # Ignore configs that do not have 'src' solution at all.
+  if not conf['gclient_url']:
+    return
   current = {
     'name': 'src',
     'deps_file': conf['gclient_deps'],