[misc] avoid double-negative variable use

lib/connection.js

@@ -365,8 +365,7 @@ class Connection extends EventEmitter {
       const resetCmd = new Reset(
         cmdParam,
         () => {
-          if (conn.prepareCache)
-            conn.prepareCache.reset();
+          if (conn.prepareCache) conn.prepareCache.reset();
           let prom = Promise.resolve();
           // re-execute init query / session query timeout
           prom
@@ -1081,34 +1080,33 @@ class Connection extends EventEmitter {
    * Add command to command sending and receiving queue.
    *
    * @param cmd         command
+   * @param expectResponse queue command response
    * @private
    */
-  addCommandEnable(cmd, skipReceive) {
+  addCommandEnable(cmd, expectResponse) {
     cmd.once('end', this._sendNextCmdImmediate.bind(this));
 
     //send immediately only if no current active receiver
     if (this.sendQueue.isEmpty() && this.receiveQueue.isEmpty()) {
-      if (!skipReceive)
-        this.receiveQueue.push(cmd);
+      if (expectResponse) this.receiveQueue.push(cmd);
       cmd.start(this.streamOut, this.opts, this.info);
     } else {
-      if (!skipReceive)
-        this.receiveQueue.push(cmd);
+      if (expectResponse) this.receiveQueue.push(cmd);
       this.sendQueue.push(cmd);
     }
   }
 
   /**
    * Add command to command sending and receiving queue using pipelining
    *
-   * @param cmd         command
+   * @param cmd             command
+   * @param expectResponse queue command response
    * @private
    */
-  addCommandEnablePipeline(cmd, skipReceive) {
+  addCommandEnablePipeline(cmd, expectResponse) {
     cmd.once('send_end', this._sendNextCmdImmediate.bind(this));
 
-    if (!skipReceive)
-      this.receiveQueue.push(cmd);
+    if (expectResponse) this.receiveQueue.push(cmd);
     if (this.sendQueue.isEmpty()) {
       cmd.start(this.streamOut, this.opts, this.info);
       if (cmd.sending) {
@@ -1790,7 +1788,7 @@ class Connection extends EventEmitter {
         () => {},
         prepareResultPacket
       ),
-      true
+      false
     );
   }