coa.13: fix character-view crash on chars with >2 professions

SetItemButtonTexture now guards a nil IconTexture (was crashing whenever a button
didn't exist). UpdateViewIcons profession loop stops at the last existing _ProfN
button instead of indexing a nil frame; added _Prof3..8 so CoA chars (which can know
many professions) show more than 2. This was blocking the character detail view from
rendering when you clicked a char in the Account Summary.

Altoholic/Altoholic.lua

@@ -495,11 +495,12 @@ function addon:SetItemButtonTexture(button, texture, width, height)
 	height = height or 36
 
 	local itemTexture = _G[button.."IconTexture"]
-	
+	if not itemTexture then return end		-- CoA: guard buttons that don't exist / lack an IconTexture region (e.g. iterating more professions than there are _ProfN buttons)
+
 	itemTexture:SetWidth(width);
 	itemTexture:SetHeight(height);
 	itemTexture:SetAllPoints(_G[button]);
-	
+
 	SetItemButtonTexture(_G[button], texture)
 end