cairo: Fix some typos in Error Display impl

Author: wezm

cairo/src/error.rs

@@ -117,7 +117,7 @@ impl fmt::Display for Error {
             Error::NullPointer => fmt.write_str("Null Pointer"),
             Error::InvalidString => fmt.write_str("Invalid String"),
             Error::InvalidPathData => fmt.write_str("Invalid Path Data"),
-            Error::ReadError => fmt.write_str("Cairo : Read Error"),
+            Error::ReadError => fmt.write_str("Read Error"),
             Error::WriteError => fmt.write_str("Write Error"),
             Error::SurfaceFinished => fmt.write_str("Surface Finished"),
             Error::SurfaceTypeMismatch => fmt.write_str("Surface Type Mismatch"),
@@ -127,7 +127,7 @@ impl fmt::Display for Error {
             Error::InvalidVisual => fmt.write_str("Invalid Visual"),
             Error::FileNotFound => fmt.write_str("File Not Found"),
             Error::InvalidDash => fmt.write_str("Invalid Dash"),
-            Error::InvalidDscComment => fmt.write_str("Invalid Dash Comment"),
+            Error::InvalidDscComment => fmt.write_str("Invalid DSC Comment"),
             Error::InvalidIndex => fmt.write_str("Invalid Index"),
             Error::ClipNotRepresentable => fmt.write_str("Clip Not Representable"),
             Error::TempFileError => fmt.write_str("Temp File Error"),