glsl: Fix bad indentation in bit_logic_result_type().
glsl: Fix bad indentation in bit_logic_result_type().

The first level of indentation was using 4 spaces.  Mesa uses 3.

Trivial.

Signed-off-by: Kenneth Graunke <bd2562f754ec92342f93f61c25d731e290a2ffa8@whitecape.org>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler