devel/libcjson: Update to newer snapshot (fb16e5c)
- Bump PORTREVISION for package change
Changes: https://github.com/DaveGamble/cJSON/commits/master
Reference: https://github.com/DaveGamble/cJSON/commit/5cc0e39f42dfe28cb8541f95fa2c513f0d550210
https://github.com/DaveGamble/cJSON/commit/b2890c8d76bbb64e710585ebc0a917196b9c67e7 https://github.com/DaveGamble/cJSON/commit/fb16e5cf358798aabb049655975cde8427101056