[hvar] Rename lsb function for clarity

src/hb-ot-hmtx-table.hh

@@ -242,8 +242,8 @@ struct hmtxvmtx
 	return side_bearing;
 
       float lsb;
-      if (var_table->get_side_bearing_var (glyph, font->coords, font->num_coords, &lsb))
-	return side_bearing + lsb;
+      if (var_table->get_lsb_delta_unscaled (glyph, font->coords, font->num_coords, &lsb))
+	return side_bearing + roundf (lsb);
 
       return _glyf_get_side_bearing_var (font, glyph, T::tableTag == HB_OT_TAG_vmtx);
 #else

src/hb-ot-var-hvar-table.hh

@@ -329,9 +329,9 @@ struct HVARVVAR
 				      store_cache);
   }
 
-  bool get_side_bearing_var (hb_codepoint_t glyph,
-			     const int *coords, unsigned int coord_count,
-			     float *lsb) const
+  bool get_lsb_delta_unscaled (hb_codepoint_t glyph,
+			       const int *coords, unsigned int coord_count,
+			       float *lsb) const
   {
     if (!lsbMap) return false;
     uint32_t varidx = (this+lsbMap).map (glyph);