Merge pull request #27 from firebase/hkj-lint-45

Fixing a couple of lint errors for .NET 4.5

Author: hiranya911

FirebaseAdmin/FirebaseAdmin/Auth/FirebaseTokenVerifier.cs

@@ -219,7 +219,7 @@ private async Task VerifySignatureAsync(
                     hash, signature, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1)
 #elif NET45
                 key.Id == keyId &&
-                    ((RSACryptoServiceProvider) key.RSA).VerifyHash(hash, Sha256Oid, signature)
+                    ((RSACryptoServiceProvider)key.RSA).VerifyHash(hash, Sha256Oid, signature)
 #else
 #error Unsupported target
 #endif

FirebaseAdmin/FirebaseAdmin/Auth/HttpPublicKeySource.cs

@@ -121,7 +121,7 @@ private IReadOnlyList<PublicKey> ParseKeys(string json)
 #if NETSTANDARD1_5 || NETSTANDARD2_0
                 rsa = x509cert.GetRSAPublicKey();
 #elif NET45
-                rsa = (RSAKey) x509cert.PublicKey.Key;
+                rsa = (RSAKey)x509cert.PublicKey.Key;
 #else
 #error Unsupported target
 #endif