gui: fix condition handling for lists

Base class must be called first, otherwise the condition can never
again become true. Fixes font size switching in Material theme.

Change-Id: I160a733549495e1bde3cead56b0a3582f0dc744c
diff --git a/gui/partitionlist.cpp b/gui/partitionlist.cpp
index 7e5a74f..e9c1652 100644
--- a/gui/partitionlist.cpp
+++ b/gui/partitionlist.cpp
@@ -145,11 +145,11 @@
 
 int GUIPartitionList::NotifyVarChange(const std::string& varName, const std::string& value)
 {
+	GUIScrollList::NotifyVarChange(varName, value);
+
 	if(!isConditionTrue())
 		return 0;
 
-	GUIScrollList::NotifyVarChange(varName, value);
-
 	if (varName == mVariable && !mUpdate)
 	{
 		if (ListType == "storage") {