omp-general.cc: Remove 'if' around call to always 'true' returning function [PR118627]

omp-general.cc: Remove 'if' around call to always 'true' returning function [PR118627]

Before omp_parse_access_method and omp_parse_access_methods unconditionally
returned true, now they are void functions.
Accordingly, calls had to be updated by removing the 'if' around the call;
this also fixes Clang's -Wsometimes-uninitialized warning when compiling
omp-general.cc as one variable remained uninitialized for a never occurring
false.

gcc/ChangeLog:

	PR middle-end/118627

	* omp-general.cc (omp_parse_access_method): Change to return void.
	(omp_parse_access_methods): Return void; remove 'if' around a
	function call.
	(omp_parse_expr): Remove 'if' around a function call.