Remove unnecessary force_bytes() calls priot to base64url_decode() (#543)

The first line of base64url_decode() is:

    if isinstance(input, str):
        input = input.encode("ascii")

It therefore accepts either str or bytes. Don't bother coercing to bytes
at the call site.

1 files changed, 3 insertions, 3 deletions

diff --git a/jwt/algorithms.py b/jwt/algorithms.py
index d4eb862..2eb090c 100644
--- a/jwt/algorithms.py
+++ b/jwt/algorithms.py
@@ -442,8 +442,8 @@ if has_crypto:  # noqa: C901
             if "x" not in obj or "y" not in obj:
                 raise InvalidKeyError("Not an Elliptic curve key")
 
-            x = base64url_decode(force_bytes(obj.get("x")))
-            y = base64url_decode(force_bytes(obj.get("y")))
+            x = base64url_decode(obj.get("x"))
+            y = base64url_decode(obj.get("y"))
 
             curve = obj.get("crv")
             if curve == "P-256":
@@ -479,7 +479,7 @@ if has_crypto:  # noqa: C901
             if "d" not in obj:
                 return public_numbers.public_key()
 
-            d = base64url_decode(force_bytes(obj.get("d")))
+            d = base64url_decode(obj.get("d"))
             if len(d) != len(x):
                 raise InvalidKeyError(
                     "D should be {} bytes for curve {}", len(x), curve