Cleanup: use plural names for Main lists

Convention was not to but after discussion on 918941483f7e we agree its
best to change the convention.

Names now mostly follow RNA.

Some exceptions:

- Use 'nodetrees' instead of 'nodegroups'
  since the struct is called NodeTree.
- Use 'gpencils' instead of 'grease_pencil'
  since 'gpencil' is a common abbreviation in the C code.

Other exceptions:

- Leave 'wm' as it's a list of one.
- Leave 'ipo' as is for versioning.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_particle.c b/source/blender/makesrna/intern/rna_particle.c
index 6af131fd857..4e1a539fe69 100644
--- a/source/blender/makesrna/intern/rna_particle.c
+++ b/source/blender/makesrna/intern/rna_particle.c
@@ -625,7 +625,7 @@ static void rna_Particle_change_type(Main *bmain, Scene *UNUSED(scene), PointerR
 	ParticleSettings *part = ptr->id.data;
 
 	/* Iterating over all object is slow, but no better solution exists at the moment. */
-	for (Object *ob = bmain->object.first; ob; ob = ob->id.next) {
+	for (Object *ob = bmain->objects.first; ob; ob = ob->id.next) {
 		for (ParticleSystem *psys = ob->particlesystem.first; psys; psys = psys->next) {
 			if (psys->part == part) {
 				psys_changed_type(ob, psys);