Warnings "unary operator expected"

[Donghyeok Kang]

Hi,
I got these warnings.

/efs/mysql/rsnapshot-mysql.sh: line 362: [: ==: unary operator expected
/efs/mysql/rsnapshot-mysql.sh: line 365: [: ==: unary operator expected
/efs/mysql/rsnapshot-mysql.sh: line 368: [: ==: unary operator expected

Please check this out.
Thanks.

[Juanga Covas]

Hello, I've just updated the script. Please try again, I tested it.