[librsvg/librsvg-2.44] NodeChars.measure(): Oops, actually add the width to the running length

[Federico Mena Quintero <federico src gnome org>]

commit 2faf6a784f3a94b9e5d1cd688826cd9f3ffb6ab6
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Oct 29 17:57:42 2018 -0600

    NodeChars.measure(): Oops, actually add the width to the running length
    
    Why did none of the tests catch this?  Probably because we don't
    have chained tspans?

 rsvg_internals/src/text.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/rsvg_internals/src/text.rs b/rsvg_internals/src/text.rs
index 2f0ff799..d597eace 100644
--- a/rsvg_internals/src/text.rs
+++ b/rsvg_internals/src/text.rs
@@ -106,7 +106,7 @@ impl NodeChars {
         let layout = self.create_layout(node, values, draw_ctx);
         let (width, _) = layout.get_size();
 
-        *length = f64::from(width) / f64::from(pango::SCALE);
+        *length += f64::from(width) / f64::from(pango::SCALE);
     }
 
     fn render(