prevent duplicate lookup when searching for verification algorithm

kleinmrk · kleinmrk · commit 0eb1f6accad7 · 2022-04-11T01:19:06.000+02:00
diff --git a/include/jwt-cpp/jwt.h b/include/jwt-cpp/jwt.h
@@ -3723,11 +3723,12 @@ 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
`@@ -3723,11 +3723,12 @@ namespace jwt {`
`3723`	`3723`	`}`
`3724`	`3724`
`3725`	`3725`	`if (!key_found) {`
`3726`		`- if (algs.count(algo) == 0) {`
	`3726`	`+ auto alg = algs.find(algo);`
	`3727`	`+ if (alg == algs.end()) {`
`3727`	`3728`	`ec = error::token_verification_error::wrong_algorithm;`
`3728`	`3729`	`return;`
`3729`	`3730`	`}`
`3730`		`- algs.at(algo)->verify(data, sig, ec);`
	`3731`	`+ alg->second->verify(data, sig, ec);`
`3731`	`3732`	`}`
`3732`	`3733`
`3733`	`3734`	`if (ec) return;`