check for getProvider is nullable in mobile money

Author: mikelis135

rave_presentation/src/main/java/com/flutterwave/raveandroid/rave_presentation/ghmobilemoney/GhMobileMoneyHandler.java

@@ -135,13 +135,14 @@ public void requeryTx(final String flwRef, final String txRef, final String publ
         body.setTx_ref(txRef);
         body.setPBFPubKey(publicKey);
 
-        if (data.getProvider().equalsIgnoreCase(RaveConstants.eTransact_GH)){
+        data.setProvider(null);
+
+        if (data.getProvider() != null && data.getProvider().equalsIgnoreCase(RaveConstants.eTransact_GH)){
             mInteractor.showPollingIndicator(true, data.getValidateInstructions());
         }else{
             mInteractor.showPollingIndicator(true, "");
         }
 
-
         logEvent(new RequeryEvent().getEvent(), publicKey);
 
         networkRequest.requeryTx(body, new Callbacks.OnRequeryRequestComplete() {

rave_remote/src/main/java/com/flutterwave/raveandroid/rave_remote/responses/MobileMoneyChargeResponse.java

@@ -1,5 +1,7 @@
 package com.flutterwave.raveandroid.rave_remote.responses;
 
+import androidx.annotation.Nullable;
+
 import com.google.gson.annotations.SerializedName;
 
 /**
@@ -47,14 +49,16 @@ public static class Data {
         @SerializedName("link")
         String captchaLink;
         String code;
+        @Nullable
         String provider;
         String validateInstructions;
 
+        @Nullable
         public String getProvider() {
             return provider;
         }
 
-        public void setProvider(String provider) {
+        public void setProvider(@Nullable String provider) {
             this.provider = provider;
         }