fix: fix optional argument

Author: hansemannn

ios/Classes/FirebaseDatabaseModule.m

@@ -36,7 +36,11 @@ - (NSString *)moduleId
 
 - (FirebaseDatabaseReferenceProxy *)getReference:(id)arguments
 {
-  ENSURE_SINGLE_ARG(arguments, NSDictionary);
+  ENSURE_SINGLE_ARG_OR_NIL(arguments, NSDictionary);
+
+  if (arguments == nil) {
+    arguments = [NSDictionary dictionary];
+  }
 
   NSString *identifier = [arguments objectForKey:@"identifier"];
   NSString *path = [arguments objectForKey:@"path"];
@@ -51,6 +55,8 @@ - (FirebaseDatabaseReferenceProxy *)getReference:(id)arguments
     reference = [[FIRDatabase database] referenceWithPath:path];
   } else if (url != nil) {
     reference = [[FIRDatabase database] referenceFromURL:url];
+  } else {
+    reference = [[FIRDatabase database] reference];
   }
 
   if (reference == nil) {

ios/manifest

@@ -2,7 +2,7 @@
 # this is your module manifest and used by Titanium
 # during compilation, packaging, distribution, etc.
 #
-version: 2.0.0
+version: 2.0.1
 apiversion: 2
 architectures: arm64 x86_64
 description: titanium-firebase-database

ios/titanium.xcconfig

@@ -4,7 +4,7 @@
 // OF YOUR TITANIUM SDK YOU'RE BUILDING FOR
 //
 //
-TITANIUM_SDK_VERSION = 10.1.0.GA
+TITANIUM_SDK_VERSION = 10.1.1.GA
 
 //
 // THESE SHOULD BE OK GENERALLY AS-IS