Add a check that `oidc.{state}` exists in localStorage.

[AlexanderKositsyn]

Redirect to localhost/?state=123&code=... with no oidc.123 in localStorage couses error Error: No matching state found in storage

oidc-react/src/AuthContext.tsx

Line 115 in f20f928

if (hasCodeInUrl(location)) {

[flcarre]

Got same issue, +1

[shtbik]

+1