runtime: fix tab/space inconsistency in runtime-gdb.py
runtime: fix tab/space inconsistency in runtime-gdb.py

Change-Id: I78c6198eb909e679cf0f776b77dda52211bfd347
Reviewed-on: https://go-review.googlesource.com/45133
Run-TryBot: Austin Clements <7ea35d812706d9213868749011af1ed4fa2f6aa0@google.com>
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

codestation/go,josharian/go,akutz/go,codestation/go,CAFxX/go,CAFxX/go,cloudflare/go,vsekhar/elastic-go,codestation/go,Cofyc/go,polyverse-security/go,Cofyc/go,akutz/go,Cofyc/go,polyverse-security/go,akutz/go,cloudflare/go,CAFxX/go,polyverse-security/go,CAFxX/go,nawawi/go,Cofyc/go,josharian/go,akutz/go,golang/go,nawawi/go,akutz/go,codestation/go,vsekhar/elastic-go,golang/go,cloudflare/go,golang/go,vsekhar/elastic-go,nawawi/go,akutz/go,josharian/go,nawawi/go,codestation/go,Cofyc/go,christopher-henderson/Go,Cofyc/go,vsekhar/elastic-go,golang/go,cloudflare/go,codestation/go,vsekhar/elastic-go,golang/go,cloudflare/go,cloudflare/go,nawawi/go,vsekhar/elastic-go,Cofyc/go,josharian/go,vsekhar/elastic-go,CAFxX/go,codestation/go,nawawi/go,nawawi/go,CAFxX/go,polyverse-security/go,vsekhar/elastic-go,CAFxX/go,nawawi/go,golang/go,akutz/go,golang/go,codestation/go,cloudflare/go,polyverse-security/go,josharian/go,cloudflare/go,Cofyc/go,polyverse-security/go,josharian/go,polyverse-security/go,CAFxX/go,akutz/go,josharian/go,golang/go,polyverse-security/go,josharian/go