mesa: simplify ff fs generator a bit
mesa: simplify ff fs generator a bit

Literally.

Signed-off-by: Miklós Máté <15d0862fd37e873c09c368d26c45bf2db0f823cd@gmail.com>
Reviewed-by: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler