Fortran: Fix ICE and clear incorrect error messages [PR114739]

Fortran: Fix ICE and clear incorrect error messages [PR114739]

2024-05-06  Paul Thomas  <pault@gcc.gnu.org>

gcc/fortran
	PR fortran/114739
	* primary.cc (gfc_match_varspec): Check for default type before
	checking for derived types with the right component name.

gcc/testsuite/
	PR fortran/114739
	* gfortran.dg/pr114739.f90: New test.
	* gfortran.dg/derived_comp_array_ref_8.f90: Add 'implicit none'
	for consistency with expected error message.
	* gfortran.dg/nullify_4.f90: ditto
	* gfortran.dg/pointer_init_6.f90: ditto
	* gfortran.dg/pr107397.f90: ditto
	* gfortran.dg/pr88138.f90: ditto