Merge "Release reference when putting RILRequest back into the pool."

Author: Jean-Baptiste Queru

telephony/java/com/android/internal/telephony/RIL.java

@@ -141,6 +141,7 @@ void release() {
                 this.mNext = sPool;
                 sPool = this;
                 sPoolSize++;
+                mResult = null;
             }
         }
     }