Fixed small sizing issue.

src/definitions/modules/range.less

@@ -510,6 +510,9 @@
   height: @smallHeight;
   width: @smallHeight;
 }
+.ui.range.small .inner {
+  height: @smallHeight;
+}
 .ui.range.small .inner .track,
 .ui.range.small .inner .track-fill {
   height: @smallTrackHeight;
@@ -525,6 +528,9 @@
   height: @largeHeight;
   width: @largeHeight;
 }
+.ui.range.large .inner {
+  height: @largeHeight;
+}
 .ui.range.large .inner .track,
 .ui.range.large .inner .track-fill {
   height: @largeTrackHeight;
@@ -540,6 +546,9 @@
   height: @bigHeight;
   width: @bigHeight;
 }
+.ui.range.big .inner {
+  height: @bigHeight;
+}
 .ui.range.big .inner .track,
 .ui.range.big .inner .track-fill {
   height: @bigTrackHeight;