In SetConfig.getSetAtoms(), access self.psets directly in order to avoid
making a copy and also to avoid potential swallowing of an unexpected
KeyError.

svn path=/main/trunk/; revision=11791
diff --git a/pym/portage/sets/__init__.py b/pym/portage/sets/__init__.py
index a668c83..ef7c1d9 100644
--- a/pym/portage/sets/__init__.py
+++ b/pym/portage/sets/__init__.py
@@ -138,8 +138,9 @@
 		"""
 		This raises PackageSetNotFound if the give setname does not exist.
 		"""
+		self._parse()
 		try:
-			myset = self.getSets()[setname]
+			myset = self.psets[setname]
 		except KeyError:
 			raise PackageSetNotFound(setname)
 		myatoms = myset.getAtoms()