Fixed coding style issues

Filter/GeoPolygonFilter.php

@@ -56,6 +56,7 @@ class GeoPolygonFilter implements BuilderInterface
      */
     public function toArray()
     {
+        $query = [];
         $query[$this->field] = ['points' => $this->points];
         $output = $this->processArray($query);
 

Filter/IdsFilter.php

@@ -49,6 +49,7 @@ class IdsFilter implements BuilderInterface
      */
     public function toArray()
     {
+        $query = [];
         $query['values'] = $this->values;
 
         $output = $this->processArray($query);

Filter/MissingFilter.php

@@ -49,6 +49,7 @@ class MissingFilter implements BuilderInterface
      */
     public function toArray()
     {
+        $query = [];
         $query['field'] = $this->field;
 
         $output = $this->processArray($query);

Filter/NotFilter.php

@@ -49,6 +49,7 @@ class NotFilter implements BuilderInterface
      */
     public function toArray()
     {
+        $query = [];
         $query['filter'] = [$this->filter->getType() => $this->filter->toArray()];
 
         $output = $this->processArray($query);

Query/Span/SpanMultiTermQuery.php

@@ -53,6 +53,7 @@ class SpanMultiTermQuery implements SpanQueryInterface
      */
     public function toArray()
     {
+        $query = [];
         $query['match'] = [$this->query->getType() => $this->query->toArray()];
         $output = $this->processArray($query);