don't want to link to system static libs for DISABLE_DYNLOADING

since...

commit 4250958a492b300a52a83e68dd599f9c36c5086e
Author: Caolán McNamara <caolanm@redhat.com>
Date:   Fri Aug 20 14:31:36 2021 +0100

    ofz: prep for allowing oss-fuzz msan

    dependencies need to be built with the msan flags so undo the
    --with-system .a usage now that trying to squeeze into the 12 hour build
    window isn't critical because the afl 6-8 hour build+check is disabled

dropped the use case for that

Change-Id: Ic525c9e0a948195cc823d904ba5a0d80b3aff668
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126455
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/solenv/gbuild/platform/unxgcc.mk b/solenv/gbuild/platform/unxgcc.mk
index a7631f4..c6b2079 100644
--- a/solenv/gbuild/platform/unxgcc.mk
+++ b/solenv/gbuild/platform/unxgcc.mk
@@ -129,11 +129,9 @@ $(call gb_Helper_abbreviate_dirs,\
		$(foreach extraobjectlist,$(EXTRAOBJECTLISTS),`cat $(extraobjectlist)`) \
		$(if $(filter TRUE,$(DISABLE_DYNLOADING)), \
		    -Wl$(COMMA)--start-group \
		    $(call gb_Helper_optional,FUZZERS,-Wl$(COMMA)-Bstatic) \
		    $(patsubst lib%.a,-l%,$(patsubst lib%.so,-l%,$(patsubst %.$(gb_Library_UDK_MAJORVER),%,$(foreach lib,$(LINKED_LIBS),$(call gb_Library_get_filename,$(lib)))))) \
		    $(foreach lib,$(LINKED_STATIC_LIBS),$(call gb_StaticLibrary_get_target,$(lib))) \
		    $(T_LIBS) \
		    $(call gb_Helper_optional,FUZZERS,-Wl$(COMMA)-Bdynamic) \
		    $(if $(CXXOBJECTS)$(GENCXXOBJECTS)$(EXTRAOBJECTLISTS)$(filter-out XTRUE,X$(ENABLE_RUNTIME_OPTIMIZATIONS)),$(T_STDLIBS_CXX)) \
		    -Wl$(COMMA)--end-group \
		    , \