Remove unnecessary explicit lifetime.

openssl/src/x509/extension.rs

@@ -80,7 +80,7 @@ impl ExtensionType {
         }
     }
 
-    pub fn get_name<'a>(&'a self) -> Option<&'a str> {
+    pub fn get_name(&self) -> Option<&str> {
         match self {
             &ExtensionType::OtherStr(ref s) => Some(s),
             _ => None,