handle if null init callback (#45)

Author: aarsilv

Diff for: eppo/build.gradle

@@ -4,7 +4,7 @@ plugins {
 }
 
 group = "cloud.eppo"
-version = "1.0.6"
+version = "1.0.7"
 
 android {
     compileSdk 33

Diff for: eppo/src/androidTest/java/cloud/eppo/android/EppoClientTest.java

@@ -167,6 +167,7 @@ public void onError(String errorMessage) {
                 })
                 .buildAndInit();
 
+        // Wait for initialization to succeed or fail, up to 10 seconds, before continuing
         try {
             if (!lock.await(10000, TimeUnit.MILLISECONDS)) {
                 throw new InterruptedException("Request for RAC did not complete within timeout");

Diff for: eppo/src/main/java/cloud/eppo/android/ConfigurationRequestor.java

@@ -29,7 +29,9 @@ public void load(InitializationCallback callback) {
             @Override
             public void onCacheLoadSuccess() {
                 cachedUsed.set(true);
-                callback.onCompleted();
+                if (callback != null) {
+                    callback.onCompleted();
+                }
             }
 
             @Override