panic: runtime error: slice bounds out of range [:-1]

[makeconfig2017]

Describe the bug
While switching pg_stat_statements switch with 'x' getting panic:
panic: runtime error: slice bounds out of range [:-1]

goroutine 1 [running]:
github.com/lesovsky/pgcenter/top.printStatData(0xc0001bc2d0, 0x4000666666666666, 0x40087ae147ae147b, 0x40095c28f5c28f5c, 0x3c6d, 0x3bd, 0x1839, 0x1e83, 0x1dfd, 0x86, ...)
/home/runner/work/pgcenter/pgcenter/top/stat.go:394 +0x677
github.com/lesovsky/pgcenter/top.printDbstat(0xc0001bc2d0, 0xc0001241c0, 0x4000666666666666, 0x40087ae147ae147b, 0x40095c28f5c28f5c, 0x3c6d, 0x3bd, 0x1839, 0x1e83, 0x1dfd, ...)
/home/runner/work/pgcenter/pgcenter/top/stat.go:309 +0x14f
github.com/lesovsky/pgcenter/top.printStat.func1(0xc0001b2000, 0xc0001d79e0, 0x0)
/home/runner/work/pgcenter/pgcenter/top/stat.go:135 +0x73b
github.com/jroimartin/gocui.(*Gui).consumeevents(0xc0001b2000, 0xc0001d7b10, 0x0)
/home/runner/go/pkg/mod/github.com/jroimartin/gocui@v0.4.0/gui.go:399 +0x1b4
github.com/jroimartin/gocui.(*Gui).MainLoop(0xc0001b2000, 0x946418, 0x9b5380)
/home/runner/go/pkg/mod/github.com/jroimartin/gocui@v0.4.0/gui.go:381 +0x1fa
github.com/lesovsky/pgcenter/top.mainLoop(0x9b53b8, 0xc0000b8010, 0xc000100780, 0x0, 0xc0000b8530)
/home/runner/work/pgcenter/pgcenter/top/ui.go:45 +0x225
github.com/lesovsky/pgcenter/top.RunMain(0xc000120000, 0x0, 0x0)
/home/runner/work/pgcenter/pgcenter/top/top.go:30 +0x19b
github.com/lesovsky/pgcenter/cmd/top.glob..func1(0xc19f20, 0xc0000c67e0, 0x0, 0x2, 0x0, 0x0)
/home/runner/work/pgcenter/pgcenter/cmd/top/top.go:31 +0xc5
github.com/spf13/cobra.(*Command).execute(0xc19f20, 0xc0000c67c0, 0x2, 0x2, 0xc19f20, 0xc0000c67c0)
/home/runner/go/pkg/mod/github.com/spf13/cobra@v0.0.3/command.go:762 +0x472
github.com/spf13/cobra.(*Command).ExecuteC(0xc1a180, 0xc00004e778, 0xc000093f78, 0x406365)
/home/runner/go/pkg/mod/github.com/spf13/cobra@v0.0.3/command.go:852 +0x2fe
github.com/spf13/cobra.(*Command).Execute(...)
/home/runner/go/pkg/mod/github.com/spf13/cobra@v0.0.3/command.go:800
main.main()
/home/runner/work/pgcenter/pgcenter/cmd/pgcenter.go:62 +0x31

Environment
Describe the environment where the bug occurred.

• OS: [NAME=Fedora
  VERSION="29 (Twenty Nine)"
  ID=fedora
  VERSION_ID=29
  VERSION_CODENAME=""
  PLATFORM_ID="platform:f29"
  PRETTY_NAME="Fedora 29 (Twenty Nine)"
  ANSI_COLOR="0;34"
  LOGO=fedora-logo-icon
  CPE_NAME="cpe:/o:fedoraproject:fedora:29"
  HOME_URL="https://fedoraproject.org/"
  DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f29/system-administrators-guide/"
  SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
  BUG_REPORT_URL="https://bugzilla.redhat.com/"
  REDHAT_BUGZILLA_PRODUCT="Fedora"
  REDHAT_BUGZILLA_PRODUCT_VERSION=29
  REDHAT_SUPPORT_PRODUCT="Fedora"
  REDHAT_SUPPORT_PRODUCT_VERSION=29
  PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"]
• pgCenter Version [pgcenter v0.8.0 df1cea5-release]
• pgCenter installation method: [https://github.com/lesovsky/pgcenter/releases/tag/v0.8.0]
• PostgreSQL Version [PostgreSQL 10.17 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), 64-bit]

To Reproduce
Run pgcenter top
Switch pg_stat_statements with 'x'

Expected behavior
Switching pg_stat_statements

[lesovsky]

Hmm, is this occur every time you press 'x' or randomly?

[lesovsky]

Could you try to reproduce the issue using the master branch? This should be fixed here 9adb560.