Fixing crash occurring when creating a new bankroll

app/src/main/java/net/pokeranalytics/android/model/realm/Currency.kt

@@ -24,22 +24,26 @@ open class Currency : RealmObject() {
 
             val rate = value ?: 1.0
 
-            // could be async
+            // could be async?
 
-            val query = this.realm.where(ComputableResult::class.java)
-	        query.`in`("session.bankroll.currency.id", arrayOf(this.id))
-	        val cResults = query.findAll()
+	        if (this.isManaged && this.realm != null) {
 
-            cResults.forEach { computable ->
+		        val query = this.realm.where(ComputableResult::class.java)
+		        query.`in`("session.bankroll.currency.id", arrayOf(this.id))
+		        val cResults = query.findAll()
 
-                computable.session?.result?.net?.let {
-                    computable.ratedNet = it * rate
-                }
-                computable.session?.result?.buyin?.let {
-                    computable.ratedBuyin = it * rate
-                }
+		        cResults.forEach { computable ->
+
+			        computable.session?.result?.net?.let {
+				        computable.ratedNet = it * rate
+			        }
+			        computable.session?.result?.buyin?.let {
+				        computable.ratedBuyin = it * rate
+			        }
+
+		        }
+	        }
 
-            }
         }
 
 }