MSVC build warnigs

The default framework returns the following MSVC build warnings:

Severity	Code	Description	File	Project	Line	Suppression State
Warning	C4206	nonstandard extension used: translation unit is empty	c:\myprojects_ivas\git_3gpp\ivas-codec\lib_util\split_rend_bfi_file_reader.c	lib_util	165	
Warning	C4206	nonstandard extension used: translation unit is empty	c:\myprojects_ivas\git_3gpp\ivas-codec\lib_util\split_render_file_read_write.c	lib_util	377	
Warning	C4206	nonstandard extension used: translation unit is empty	c:\myprojects_ivas\git_3gpp\ivas-codec\lib_rend\ivas_splitrendererplc.c	lib_rend	551	
Warning	C4206	nonstandard extension used: translation unit is empty	c:\myprojects_ivas\git_3gpp\ivas-codec\lib_rend\ivas_splitrenderer_utils.c	

lib_rend 1110

One solution could be an addition of pragmas.