Use the exec statement to fix the control flow.

TBR=nsylvain
Review URL: http://codereview.chromium.org/93110

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@14404 0039d316-1c4b-4281-b951-d872f2087c98

bootstrap/gclient.sh

@@ -15,4 +15,3 @@ then
 fi
 
 exec python "$base_dir/../gclient.py" "$@"
-

gclient

@@ -14,8 +14,7 @@ then
   svn -q up "$base_dir/bootstrap"
 
   # Then defer the control to the bootstrapper.
-  "$base_dir/bootstrap/gclient.sh" "$@"
+  exec "$base_dir/bootstrap/gclient.sh" "$@"
 else
-  exec "$base_dir/gclient.py" "$@"
+  exec python "$base_dir/gclient.py" "$@"
 fi
-