1 files changed, 1 insertions, 2 deletions
diff --git a/vendor/cargo-platform/src/lib.rs b/vendor/cargo-platform/src/lib.rs
index 0a3dcf1af..7911e484e 100644
--- a/vendor/cargo-platform/src/lib.rs
+++ b/vendor/cargo-platform/src/lib.rs
@@ -126,8 +126,7 @@ impl FromStr for Platform {
     type Err = ParseError;
 
     fn from_str(s: &str) -> Result<Platform, ParseError> {
-        if s.starts_with("cfg(") && s.ends_with(')') {
-            let s = &s[4..s.len() - 1];
+        if let Some(s) = s.strip_prefix("cfg(").and_then(|s| s.strip_suffix(')')) {
             s.parse().map(Platform::Cfg)
         } else {
             Platform::validate_named_platform(s)?;