Some condition simplifications suggested by static analysis

src/pocketmine/entity/Entity.php

@@ -1392,10 +1392,7 @@ abstract class Entity extends Location implements Metadatable{
 
 		$bb = $block->getBoundingBox();
 
-		if($bb !== null and $block->isSolid() and !$block->isTransparent() and $bb->intersectsWith($this->getBoundingBox())){
-			return true;
-		}
-		return false;
+		return $bb !== null and $block->isSolid() and !$block->isTransparent() and $bb->intersectsWith($this->getBoundingBox());
 	}
 
 	public function fastMove(float $dx, float $dy, float $dz) : bool{

src/pocketmine/item/Item.php

@@ -437,11 +437,8 @@ class Item implements ItemIds, \JsonSerializable{
 		}
 
 		$tag = $this->getNamedTag();
-		if(isset($tag->BlockEntityTag) and $tag->BlockEntityTag instanceof CompoundTag){
-			return true;
-		}
 
-		return false;
+		return isset($tag->BlockEntityTag) and $tag->BlockEntityTag instanceof CompoundTag;
 	}
 
 	public function clearCustomBlockData(){

src/pocketmine/level/format/io/leveldb/LevelDB.php

@@ -599,11 +599,7 @@ class LevelDB extends BaseLevelProvider{
 	}
 
 	public function isChunkGenerated(int $chunkX, int $chunkZ) : bool{
-		if($this->chunkExists($chunkX, $chunkZ) and ($chunk = $this->getChunk($chunkX, $chunkZ, false)) !== null){
-			return true;
-		}
-
-		return false;
+		return $this->chunkExists($chunkX, $chunkZ) and ($chunk = $this->getChunk($chunkX, $chunkZ, false)) !== null;
 	}
 
 	public function isChunkPopulated(int $chunkX, int $chunkZ) : bool{

src/pocketmine/tile/Chest.php

@@ -213,11 +213,7 @@ class Chest extends Spawnable implements InventoryHolder, Container, Nameable{
 	}
 
 	public function isPaired(){
-		if(!isset($this->namedtag->pairx) or !isset($this->namedtag->pairz)){
-			return false;
-		}
-
-		return true;
+		return !(!isset($this->namedtag->pairx) or !isset($this->namedtag->pairz));
 	}
 
 	/**