gnome: Fix g-ir-scanner linking args for all code paths

We were fixing them up only in the dependency code path and not
in the InternalDependency one. Just make sure to do it once for all.

mesonbuild/modules/gnome.py

@@ -375,8 +375,6 @@ class GnomeModule(ExtensionModule):
                     # Hack to avoid passing some compiler options in
                     if lib.startswith("-W"):
                         continue
-                    if gir_has_extra_lib_arg() and use_gir_args and lib.startswith("-l"):
-                        lib = lib.replace('-l', '--extra-library=', 1)
                     ldflags.update([lib])
 
                 if isinstance(dep, PkgConfigDependency):
@@ -389,6 +387,14 @@ class GnomeModule(ExtensionModule):
                 mlog.log('dependency %s not handled to build gir files' % dep)
                 continue
 
+        if gir_has_extra_lib_arg() and use_gir_args:
+            fixed_ldflags = set()
+            for ldflag in ldflags:
+                if ldflag.startswith("-l"):
+                    fixed_ldflags.add(ldflag.replace('-l', '--extra-library=', 1))
+                else:
+                    fixed_ldflags.add(ldflag)
+            ldflags = fixed_ldflags
         return cflags, ldflags, gi_includes
 
     @permittedKwargs({'sources', 'nsversion', 'namespace', 'symbol_prefix', 'identifier_prefix',