Wrongly formatted header

The file-header for the following files is not formatted corrected (i.e. whitespace at the beginning of the lines has been removed):

• lib_dec/ivas_mcmasa_dec.c
• lib_rend/ivas_dirac_rend.c
• lib_rend/ivas_masa_merge.c

This should be fixed - otherwise it makes automatic patching of these headers unnecessarily difficult.