chore(android): adding non-null operator (#79)

Author: jerson

android/src/main/java/com/fastrsa/FastRsaModule.kt

@@ -24,7 +24,7 @@ internal class FastRsaModule(reactContext: ReactApplicationContext) :
     Thread {
       reactApplicationContext.runOnJSQueueThread {
         try {
-          val contextHolder = this.reactApplicationContext.javaScriptContextHolder.get()
+          val contextHolder = this.reactApplicationContext.javaScriptContextHolder!!.get()
           if (contextHolder.toInt() == 0) {
             call(name, payload, promise)
             return@runOnJSQueueThread
@@ -66,7 +66,7 @@ internal class FastRsaModule(reactContext: ReactApplicationContext) :
       reactApplicationContext.runOnJSQueueThread {
         Log.d(TAG, "installing")
         try {
-          val contextHolder = this.reactApplicationContext.javaScriptContextHolder.get()
+          val contextHolder = this.reactApplicationContext.javaScriptContextHolder!!.get()
           if (contextHolder.toInt() == 0) {
             promise.resolve(false)
             return@runOnJSQueueThread