Make sh scrips POSIX compliant

Using shellcheck, I went through all of them to make them standards
compliant. I also tested as many as I could.

1 files changed, 1 insertions, 1 deletions

diff --git a/swaylockd b/swaylockd
index dae45b3..b331c3a 100755
--- a/swaylockd
+++ b/swaylockd
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-WLCNT="$(pgrep -U$(whoami) -x swaylockd | wc -l)"
+WLCNT="$(pgrep -U"$(whoami)" -x swaylockd | wc -l)"
 [ "${WLCNT:-0}" -gt "2" ] && printf "Already running!\n" && exit
 
 while true; do