Fixed Rust code examples in multiple files (due to commit 9628e25971).

Readme.markdown

@@ -181,7 +181,7 @@ Rust language:
     let chrs: Vec<char> = "3141592653589793238462643383".chars().collect();
     let segs = QrSegment::make_segments(&chrs);
     let qr = QrCode::encode_segments_advanced(
-        &segs, QrCodeEcc::High, 5, 5, Some(2), false).unwrap();
+        &segs, QrCodeEcc::High, 5, 5, Some(Mask::new(2)), false).unwrap();
     for y in 0 .. qr.size() {
         for x in 0 .. qr.size() {
             (... paint qr.get_module(x, y) ...)

rust/Readme.markdown

@@ -47,7 +47,7 @@ Examples
     let chrs: Vec<char> = "3141592653589793238462643383".chars().collect();
     let segs = QrSegment::make_segments(&chrs);
     let qr = QrCode::encode_segments_advanced(
-        &segs, QrCodeEcc::High, 5, 5, Some(2), false).unwrap();
+        &segs, QrCodeEcc::High, 5, 5, Some(Mask::new(2)), false).unwrap();
     for y in 0 .. qr.size() {
         for x in 0 .. qr.size() {
             (... paint qr.get_module(x, y) ...)

rust/src/lib.rs

@@ -72,7 +72,7 @@
 //! let chrs: Vec<char> = "3141592653589793238462643383".chars().collect();
 //! let segs = QrSegment::make_segments(&chrs);
 //! let qr = QrCode::encode_segments_advanced(
-//!     &segs, QrCodeEcc::High, 5, 5, Some(2), false).unwrap();
+//!     &segs, QrCodeEcc::High, 5, 5, Some(Mask::new(2)), false).unwrap();
 //! for y in 0 .. qr.size() {
 //!     for x in 0 .. qr.size() {
 //!         (... paint qr.get_module(x, y) ...)