Summary:
The various RCTLog macros (`RCTLogWarn`, `RCTLogError`, etc..) are based on the `_RCTLog` macro, which, in its expanded form, has a semi-colon in DEV mode (i.e., when `RCTLOG_ENABLED` is set to 1), and doesn't have one when `RCTLOG_ENABLED` is set to 0.
This could lead to a situation where code will compile in DEV but will fail to compile for prod.
Fixing this by removing the semicolon from the DEV version (as should).
Reviewed By: javache
Differential Revision: D4189133
fbshipit-source-id: 54cb4e2c96d1e48d9df88464aa58b13af432c2bd