[librsvg] font_size_from_values(): No need to look at the direction; it's always Both

[Federico Mena Quintero <federico src gnome org>]

commit 3a9896a9c0dc4ce3dcf0b9d68ecfa302fe278d13
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Jan 21 19:31:13 2019 -0600

    font_size_from_values(): No need to look at the direction; it's always Both

 rsvg_internals/src/length.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/rsvg_internals/src/length.rs b/rsvg_internals/src/length.rs
index 8f71f50a..8db1b79f 100644
--- a/rsvg_internals/src/length.rs
+++ b/rsvg_internals/src/length.rs
@@ -305,7 +305,8 @@ fn font_size_from_values(values: &ComputedValues, params: &ViewParams) -> f64 {
     match v.unit {
         LengthUnit::Default => v.length,
 
-        LengthUnit::Inch => v.length * v.dir.scaling_factor(params.dpi_x, params.dpi_y),
+        // FontSize always is a LengthDir::Both, per properties.rs
+        LengthUnit::Inch => v.length * LengthDir::Both.scaling_factor(params.dpi_x, params.dpi_y),
 
         LengthUnit::Percent => unreachable!("ComputedValues can't have a relative font size"),