dont' put version into ProductDescription

set product description to "Rust Compiler" or "Rust Compiler (channel)" for non-stable channels

Author: lambdageek

compiler/rustc_windows_rc/src/lib.rs

@@ -44,7 +44,8 @@ pub fn compile_windows_resource_file(
 
     // This is just "major.minor.patch" and a "-dev", "-nightly" or similar suffix
     let rel_version = env::var("CFG_RELEASE").unwrap();
-    let product_name = format!("Rust {}", &rel_version);
+
+    let product_name = product_name(env::var("CFG_RELEASE_CHANNEL").unwrap());
 
     // remove the suffix, if present and parse into [`ResourceVersion`]
     let version = parse_version(rel_version.split("-").next().unwrap_or("0.0.0"))
@@ -80,6 +81,13 @@ pub fn compile_windows_resource_file(
     res_path
 }
 
+fn product_name(channel: String) -> String {
+    format!(
+        "Rust Compiler{}",
+        if channel == "stable" { "".to_string() } else { format!(" ({})", channel) }
+    )
+}
+
 /// Windows resources store versions as four 16-bit integers.
 struct ResourceVersion {
     major: u16,