[librsvg: 10/14] rsvg_css_parse_number_optional_number(): Don't copy the incoming string

[Federico Mena Quintero <federico src gnome org>]

commit adb2e83b2af16655efdf0d40eefa72d7ea2e04d5
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Jan 24 12:22:40 2018 -0600

    rsvg_css_parse_number_optional_number(): Don't copy the incoming string

 rust/src/parsers.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/rust/src/parsers.rs b/rust/src/parsers.rs
index 61c6c11..11b2899 100644
--- a/rust/src/parsers.rs
+++ b/rust/src/parsers.rs
@@ -9,6 +9,8 @@ use std::ptr;
 use std::slice;
 use std::str;
 
+use util::utf8_cstr;
+
 #[derive(Debug, Clone, PartialEq)]
 pub struct ParseError {
     pub display: String
@@ -112,9 +114,9 @@ pub extern fn rsvg_css_parse_number_optional_number (s: *const libc::c_char,
     assert! (!out_x.is_null ());
     assert! (!out_y.is_null ());
 
-    let string = unsafe { String::from_glib_none (s) };
+    let string = unsafe { utf8_cstr(s) };
 
-    match number_optional_number (&string) {
+    match number_optional_number (string) {
         Ok ((x, y)) => {
             unsafe {
                 *out_x = x;