[feaLib] Set RangeStart/RangeEnd as float

Fixes the one failing test after previous commit.

Lib/fontTools/feaLib/parser.py

@@ -971,8 +971,8 @@ class Parser(object):
         location = self.cur_token_location_
         DesignSize = self.expect_decipoint_()
         SubfamilyID = self.expect_number_()
-        RangeStart = 0
-        RangeEnd = 0
+        RangeStart = 0.
+        RangeEnd = 0.
         if self.next_token_type_ in (Lexer.NUMBER, Lexer.FLOAT) or SubfamilyID != 0:
             RangeStart = self.expect_decipoint_()
             RangeEnd = self.expect_decipoint_()

Tests/feaLib/builder_test.py

@@ -142,7 +142,7 @@ class BuilderTest(unittest.TestCase):
         feapath = self.getpath("%s.fea" % name)
         addOpenTypeFeatures(font, feapath)
         self.expect_ttx(font, self.getpath("%s.ttx" % name))
-        # Check that 
+        # Check that:
         # 1) tables do compile (only G* tables as long as we have a mock font)
         # 2) dumping after save-reload yields the same TTX dump as before
         for tag in ('GDEF', 'GSUB', 'GPOS'):

Tests/feaLib/data/size2.ttx

@@ -26,8 +26,8 @@
             <DesignSize value="10.0"/>
             <SubfamilyID value="0"/>
             <SubfamilyNameID value="0"/>
-            <RangeStart value="0"/>
-            <RangeEnd value="0"/>
+            <RangeStart value="0.0"/>
+            <RangeEnd value="0.0"/>
           </FeatureParamsSize>
           <!-- LookupCount=0 -->
         </Feature>