Remove unnecessary packager running check when saved JSLocation is empty
Remove unnecessary packager running check when saved JSLocation is empty

Summary:
Changelog:
When the JSLocation is nil, checking whether the address is running is unnesarry and wasting time, adding a JSLocation length check to mitigate that.

Reviewed By: cpojer

Differential Revision: D22644574

fbshipit-source-id: c51fc1a8976ebc25cba2653581e1bfa479a1d70d

facebook/react-native,pandiaraj44/react-native,hoangpham95/react-native,facebook/react-native,myntra/react-native,facebook/react-native,arthuralee/react-native,facebook/react-native,hoangpham95/react-native,janicduplessis/react-native,janicduplessis/react-native,hoangpham95/react-native,myntra/react-native,myntra/react-native,facebook/react-native,pandiaraj44/react-native,arthuralee/react-native,hoangpham95/react-native,pandiaraj44/react-native,hoangpham95/react-native,janicduplessis/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native,javache/react-native,javache/react-native,arthuralee/react-native,myntra/react-native,arthuralee/react-native,facebook/react-native,javache/react-native,facebook/react-native,javache/react-native,pandiaraj44/react-native,javache/react-native,javache/react-native,janicduplessis/react-native,arthuralee/react-native,myntra/react-native,pandiaraj44/react-native,janicduplessis/react-native,myntra/react-native,facebook/react-native,pandiaraj44/react-native,hoangpham95/react-native,janicduplessis/react-native,pandiaraj44/react-native,hoangpham95/react-native,myntra/react-native,pandiaraj44/react-native,janicduplessis/react-native,hoangpham95/react-native,myntra/react-native,myntra/react-native