prevent duplicate lookup when searching for verification algorithm

kleinmrk · kleinmrk · commit 913f95c091bf · 2022-10-02T17:43:00.000+02:00
diff --git a/include/jwt-cpp/jwt.h b/include/jwt-cpp/jwt.h
@@ -3835,11 +3835,12 @@ namespace jwt {
 			}
 
 			if (!key_found) {
-				if (algs.count(algo) == 0) {
+				auto alg = algs.find(algo);
+				if (alg == algs.end()) {
 					ec = error::token_verification_error::wrong_algorithm;
 					return;
 				}
-				algs.at(algo)->verify(data, sig, ec);
+				alg->second->verify(data, sig, ec);
 			}
 
 			if (ec) return;

Original file line number	Diff line number	Diff line change
`@@ -3835,11 +3835,12 @@ namespace jwt {`
`3835`	`3835`	`}`
`3836`	`3836`
`3837`	`3837`	`if (!key_found) {`
`3838`		`- if (algs.count(algo) == 0) {`
	`3838`	`+ auto alg = algs.find(algo);`
	`3839`	`+ if (alg == algs.end()) {`
`3839`	`3840`	`ec = error::token_verification_error::wrong_algorithm;`
`3840`	`3841`	`return;`
`3841`	`3842`	`}`
`3842`		`- algs.at(algo)->verify(data, sig, ec);`
	`3843`	`+ alg->second->verify(data, sig, ec);`
`3843`	`3844`	`}`
`3844`	`3845`
`3845`	`3846`	`if (ec) return;`