release: conditionally improve performance for get_os_pretty_name

It is difficult to get completely accurate benchmarks, given how small
the numbers we are dealing with are, but this seems to point at an
overall trend of *slightly* faster execution. The change minimizes
unnecessary memory allocations and string manipulations, to help ensure
more performant line reading and immediate return upon finding the
PRETTY_NAME without additional, redundant operations.

src/release.rs

@@ -21,7 +21,13 @@ pub fn get_os_pretty_name() -> Result<String, io::Error> {
     for line in reader.lines() {
         let line = line?;
         if let Some(pretty_name) = line.strip_prefix("PRETTY_NAME=") {
-            return Ok(pretty_name.trim_matches('"').to_string());
+            if let Some(trimmed) = pretty_name
+                .strip_prefix('"')
+                .and_then(|s| s.strip_suffix('"'))
+            {
+                return Ok(trimmed.to_string());
+            }
+            return Ok(pretty_name.to_string());
         }
     }