Fix unused_imports warning for AsciiExt (rust 1.23)

pkg-config-0.3.9-fix-unused-asciiext.diff

@@ -0,0 +1,10 @@
+--- pkg-config-0.3.9/src/lib.rs.asciiext	2017-01-24 09:27:31.000000000 -0800
++++ pkg-config-0.3.9/src/lib.rs	2018-01-25 18:11:44.581051903 -0800
+@@ -64,6 +64,7 @@
+ #![doc(html_root_url = "https://docs.rs/pkg-config/0.3")]
+ #![cfg_attr(test, deny(warnings))]
+ 
++#[allow(unused_imports)]
+ use std::ascii::AsciiExt;
+ use std::env;
+ use std::error;

rust-pkg-config.spec

@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        0.3.9
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Library to run the pkg-config system tool
 
 License:        MIT or ASL 2.0
@@ -15,6 +15,7 @@ Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{
 # Initial patched metadata
 # * Bump lazy_static to 1, https://github.com/alexcrichton/pkg-config-rs/commit/41b81f57113a1df40e899ed83dc829ab60423f33
 Patch0:         pkg-config-0.3.9-fix-metadata.diff
+Patch1:         pkg-config-0.3.9-fix-unused-asciiext.diff
 
 ExclusiveArch:  %{rust_arches}
 
@@ -60,6 +61,9 @@ which use %{crate} from crates.io.
 %{cargo_registry}/%{crate}-%{version}/
 
 %changelog
+* Thu Jan 25 2018 Josh Stone <jistone@redhat.com> - 0.3.9-5
+- Fix unused_imports warning for AsciiExt (rust 1.23)
+
 * Mon Jan 08 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.3.9-4
 - Rebuild for rust-packaging v5