Remove superfluous checks

src/add-ons/kernel/file_systems/packagefs/LastModifiedIndex.cpp

@@ -260,7 +260,7 @@ LastModifiedIndex::InternalGetIterator()
 AbstractIndexIterator*
 LastModifiedIndex::InternalFind(const void* key, size_t length)
 {
-	if (!key || length != sizeof(time_t))
+	if (length != sizeof(time_t))
 		return NULL;
 	Iterator* iterator = new(std::nothrow) Iterator;
 	if (iterator != NULL) {

src/add-ons/kernel/file_systems/packagefs/NameIndex.cpp

@@ -200,7 +200,7 @@ NameIndex::InternalGetIterator()
 AbstractIndexIterator*
 NameIndex::InternalFind(const void* _key, size_t length)
 {
-	if (_key == NULL || length == 0)
+	if (length == 0)
 		return NULL;
 
 	const char* key = (const char*)_key;

src/add-ons/kernel/file_systems/packagefs/SizeIndex.cpp

@@ -258,7 +258,7 @@ SizeIndex::InternalGetIterator()
 AbstractIndexIterator*
 SizeIndex::InternalFind(const void* key, size_t length)
 {
-	if (!key || length != sizeof(off_t))
+	if (length != sizeof(off_t))
 		return NULL;
 	Iterator* iterator = new(std::nothrow) Iterator;
 	if (iterator != NULL) {