Fix windows install detection

Author: johnschug

gpgme-sys/build.rs

@@ -22,16 +22,22 @@ fn try_registry() -> bool {
     }
 
     let hklm = RegKey::predef(HKEY_LOCAL_MACHINE);
-    let Ok(key) = hklm.open_subkey_with_flags(r"SOFTWARE\GnuPG", KEY_WOW64_32KEY) else {
-        eprintln!("unable to retrieve install location");
-        return false;
+    let key = match hklm.open_subkey_with_flags(r"SOFTWARE\GnuPG", KEY_WOW64_32KEY | KEY_READ) {
+        Ok(x) => x,
+        Err(e) => {
+            eprintln!("Unable to retrieve install location: {e}");
+            return false;
+        }
     };
-    let Ok(root) = key
+    let root = match key
         .get_value::<OsString, _>("Install Directory")
         .map(PathBuf::from)
-    else {
-        eprintln!("unable to retrieve install location");
-        return false;
+    {
+        Ok(x) => x,
+        Err(e) => {
+            eprintln!("Unable to retrieve install location: {e}");
+            return false;
+        }
     };
     println!("detected install via registry: {}", root.display());
 
@@ -40,7 +46,7 @@ fn try_registry() -> bool {
             root.join("lib/libgpgme.imp"),
             build::out_dir().join("libgpgme.a"),
         ) {
-            eprintln!("unable to rename library: {e}");
+            eprintln!("Unable to rename library: {e}");
             return false;
         }
     }