all: comply with linter recommendations #2

HTTP request now implicitly create request with context.

Any false positive related to not closing HTTP response body has been
annotated with "nolint:bodyclose".

In the example code, use consistent "// Output:" comment format, by
prefixing with single space.
Any comment on code now also prefixing with single space.

An error returned without variables now use [errors.New] instead of
[fmt.Errorf].
Any error returned using [fmt.Errorf] now wrapped using "%w" instead of
"%s".
Also, replace error checking using [errors.Is] or [errors.As], instead
of using equal/not-equal operator.

Any statement like "x = x OP y" now replaced with "x OP= y".
Also, swap statement is simplified using "x, y = y, x".
Any switch statement with single case now replaced with if-condition.

Any call to defer on function or program that call [os.Exit], now
replaced by calling the deferred function directly.

Any if-else condition now replaced with switch statement, if possible.

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/dsv/readerinterface.go b/lib/dsv/readerinterface.go
index c6fa1cb6..736b999d 100644
--- a/lib/dsv/readerinterface.go
+++ b/lib/dsv/readerinterface.go
@@ -6,6 +6,7 @@ package dsv
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -195,7 +196,7 @@ func parsingRightQuote(reader ReaderInterface, rq, line []byte, startAt int) (
 		N:    0,
 	}
 
-	if e == io.EOF {
+	if errors.Is(e, io.EOF) {
 		eRead.T &= EReadEOF
 	}
 
@@ -408,7 +409,7 @@ err:
 		What: fmt.Sprint(e),
 	}
 
-	if e == io.EOF {
+	if errors.Is(e, io.EOF) {
 		eRead.T = EReadEOF
 	} else {
 		eRead.T = EReadLine