fix: SDKE-360 fix: create defensive copies of strings for completion callback parameters (#27)

Author: denischilik

mParticle-Adobe/MPIAdobe.m

@@ -79,7 +79,7 @@ @interface MPIAdobe ()
 
 @implementation MPIAdobe
 
-- (void)sendRequestWithMarketingCloudId:(NSString *)marketingCloudId advertiserId:(NSString *)advertiserId pushToken:(NSString *)pushToken organizationId:(NSString *)organizationId userIdentities:(NSDictionary<NSNumber *, NSString *> *)userIdentities audienceManagerServer:(NSString *)audienceManagerServer completion:(void (^)(NSString *marketingCloudId, NSString *blob, NSString *locationHint, NSError *))completion {
+- (void)sendRequestWithMarketingCloudId:(NSString *)marketingCloudId advertiserId:(NSString *)advertiserId pushToken:(NSString *)pushToken organizationId:(NSString *)organizationId userIdentities:(NSDictionary<NSNumber *, NSString *> *)userIdentities audienceManagerServer:(NSString *)audienceManagerServer completion:(void (^)(NSString *marketingCloudId, NSString *locationHint, NSString *blob, NSError *))completion {
 
     if (audienceManagerServer != nil && audienceManagerServer.length > 0) {
         host = audienceManagerServer;
@@ -177,7 +177,7 @@ - (void)sendRequestWithMarketingCloudId:(NSString *)marketingCloudId advertiserI
         weakSelf.region = region;
         weakSelf.blob = blob;
 
-        completion(marketingCloudId, region, blob, nil);
+        completion([marketingCloudId copy], [region copy], [blob copy], nil);
     }] resume];
 }