clean up error imports for strvals pkg

Signed-off-by: James Sheppard <jgsheppa@protonmail.com>

pkg/strvals/literal_parser.go

@@ -102,7 +102,7 @@ func (t *literalParser) key(data map[string]interface{}, nestedNameLevel int) (r
 			if len(key) == 0 {
 				return err
 			}
-			return errors.Errorf("key %q has no value", string(key))
+			return fmt.Errorf("key %q has no value", string(key))
 
 		case lastRune == '=':
 			// found end of key: swallow the '=' and get the value
@@ -129,7 +129,7 @@ func (t *literalParser) key(data map[string]interface{}, nestedNameLevel int) (r
 			// recurse on sub-tree with remaining data
 			err := t.key(inner, nestedNameLevel)
 			if err == nil && len(inner) == 0 {
-				return errors.Errorf("key map %q has no value", string(key))
+				return fmt.Errorf("key map %q has no value", string(key))
 			}
 			if len(inner) != 0 {
 				set(data, string(key), inner)
@@ -178,7 +178,7 @@ func (t *literalParser) listItem(list []interface{}, i, nestedNameLevel int) ([]
 
 	switch key, lastRune, err := runesUntilLiteral(t.sc, stop); {
 	case len(key) > 0:
-		return list, errors.Errorf("unexpected data at end of array index: %q", key)
+		return list, fmt.Errorf("unexpected data at end of array index: %q", key)
 
 	case err != nil:
 		return list, err
@@ -233,7 +233,7 @@ func (t *literalParser) listItem(list []interface{}, i, nestedNameLevel int) ([]
 		return setIndex(list, i, list2)
 
 	default:
-		return nil, errors.Errorf("parse error: unexpected token %v", lastRune)
+		return nil, fmt.Errorf("parse error: unexpected token %v", lastRune)
 	}
 }
 

pkg/strvals/parser.go

@@ -189,7 +189,7 @@ func (t *parser) key(data map[string]interface{}, nestedNameLevel int) (reterr e
 			if len(k) == 0 {
 				return err
 			}
-			return errors.Errorf("key %q has no value", string(k))
+			return fmt.Errorf("key %q has no value", string(k))
 			//set(data, string(k), "")
 			//return err
 		case last == '[':
@@ -261,7 +261,7 @@ func (t *parser) key(data map[string]interface{}, nestedNameLevel int) (reterr e
 		case last == ',':
 			// No value given. Set the value to empty string. Return error.
 			set(data, string(k), "")
-			return errors.Errorf("key %q has no value (cannot end with ,)", string(k))
+			return fmt.Errorf("key %q has no value (cannot end with ,)", string(k))
 		case last == '.':
 			// Check value name is within the maximum nested name level
 			nestedNameLevel++
@@ -278,7 +278,7 @@ func (t *parser) key(data map[string]interface{}, nestedNameLevel int) (reterr e
 			// Recurse
 			e := t.key(inner, nestedNameLevel)
 			if e == nil && len(inner) == 0 {
-				return errors.Errorf("key map %q has no value", string(k))
+				return fmt.Errorf("key map %q has no value", string(k))
 			}
 			if len(inner) != 0 {
 				set(data, string(k), inner)
@@ -339,7 +339,7 @@ func (t *parser) listItem(list []interface{}, i, nestedNameLevel int) ([]interfa
 	stop := runeSet([]rune{'[', '.', '='})
 	switch k, last, err := runesUntil(t.sc, stop); {
 	case len(k) > 0:
-		return list, errors.Errorf("unexpected data at end of array index: %q", k)
+		return list, fmt.Errorf("unexpected data at end of array index: %q", k)
 	case err != nil:
 		return list, err
 	case last == '=':
@@ -430,7 +430,7 @@ func (t *parser) listItem(list []interface{}, i, nestedNameLevel int) ([]interfa
 		}
 		return setIndex(list, i, inner)
 	default:
-		return nil, errors.Errorf("parse error: unexpected token %v", last)
+		return nil, fmt.Errorf("parse error: unexpected token %v", last)
 	}
 }