xtask: Fix release creating an empty commit on existing release

xtask/src/release.rs

@@ -108,6 +108,7 @@ impl ReleaseTask {
 
         let mut macros = self.macros();
 
+        if self.package.version != self.version {
             if let Some(m) = macros.as_mut() {
                 println!("Found macros crate {}.", m.name);
 
@@ -119,10 +120,18 @@ impl ReleaseTask {
 
             self.package.update_version(&self.version)?;
             self.package.update_dependants(&self.metadata)?;
+        }
 
         let changes = &self.package.changes(!prerelease)?;
 
+        if self.package.version != self.version {
             self.commit()?;
+        } else if !ask_yes_no(&format!(
+            "Package is already version {}. Skip creating a commit and continue?",
+            &self.version
+        ))? {
+            return Ok(());
+        }
 
         if let Some(m) = macros {
             let published = m.publish(&self.http_client)?;