Auto merge of #12660 - Veykril:flycheck, r=Veykril
Auto merge of #12660 - Veykril:flycheck, r=Veykril

fix: Fix flycheck sending cancel progress with no running process

Fixes #12659

rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer