[Auth] Forward declare type in header (#11501)

ncooke3 · web-flow · commit 028153415a2a · 2023-06-30T17:37:59.000-04:00
diff --git a/FirebaseAuth/Sources/MultiFactor/TOTP/FIRTOTPMultiFactorInfo.h b/FirebaseAuth/Sources/MultiFactor/TOTP/FIRTOTPMultiFactorInfo.h
@@ -20,6 +20,8 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+@class FIRAuthProtoMFAEnrollment;
+
 /**
  @class FIRTotpMultiFactorInfo
  @brief Extends the MultiFactorInfo class for time based one-time password second factors.
