Makefile: double-check tx pull output
Makefile: double-check tx pull output

This is a workaround for:
https://github.com/transifex/transifex-client/issues/138

olaurendeau/v6_ui,Courgetteandratatouille/v6_ui,olaurendeau/v6_ui,Courgetteandratatouille/v6_ui,Courgetteandratatouille/v6_ui,Courgetteandratatouille/v6_ui,c2corg/v6_ui,olaurendeau/v6_ui,c2corg/v6_ui,olaurendeau/v6_ui,c2corg/v6_ui,c2corg/v6_ui