Fix gofmt and ineffassign warnings. (hypermodeinc#933)

db.go

@@ -1427,7 +1427,7 @@ func (db *DB) dropAll() (func(), error) {
 
 // DropPrefix would drop all the keys with the provided prefix. It does this in the following way:
 // - Stop accepting new writes.
-// - Stop memtable flushes before aquiring lock. Because we're acquring lock here
+// - Stop memtable flushes before acquiring lock. Because we're acquring lock here
 //   and memtable flush stalls for lock, which leads to deadlock
 // - Flush out all memtables, skipping over keys with the given prefix, Kp.
 // - Write out the value log header to memtables when flushing, so we don't accidentally bring Kp

db_test.go

@@ -1855,6 +1855,9 @@ func ExampleDB_Subscribe() {
 	}
 	defer os.RemoveAll(dir)
 	db, err := Open(DefaultOptions(dir))
+	if err != nil {
+		log.Fatal(err)
+	}
 	defer db.Close()
 
 	// Create the context here so we can cancel it after sending the writes.

trie/trie_test.go

@@ -33,13 +33,13 @@ func TestGet(t *testing.T) {
 	ids := trie.Get([]byte("hel"))
 	require.Equal(t, 1, len(ids))
 
-	require.Equal(t, map[uint64]struct{}{20: struct{}{}}, ids)
+	require.Equal(t, map[uint64]struct{}{20: {}}, ids)
 	ids = trie.Get([]byte("badger"))
 	require.Equal(t, 1, len(ids))
-	require.Equal(t, map[uint64]struct{}{30: struct{}{}}, ids)
+	require.Equal(t, map[uint64]struct{}{30: {}}, ids)
 	ids = trie.Get([]byte("hello"))
 	require.Equal(t, 4, len(ids))
-	require.Equal(t, map[uint64]struct{}{1: struct{}{}, 3: struct{}{}, 4: struct{}{}, 20: struct{}{}}, ids)
+	require.Equal(t, map[uint64]struct{}{1: {}, 3: {}, 4: {}, 20: {}}, ids)
 }
 
 func TestTrieDelete(t *testing.T) {
@@ -48,5 +48,5 @@ func TestTrieDelete(t *testing.T) {
 	trie.Add([]byte("hello"), 3)
 	trie.Add([]byte("hello"), 4)
 	trie.Delete([]byte("hello"), 4)
-	require.Equal(t, map[uint64]struct{}{1: struct{}{}, 3: struct{}{}}, trie.Get([]byte("hello")))
+	require.Equal(t, map[uint64]struct{}{1: {}, 3: {}}, trie.Get([]byte("hello")))
 }