sb-cpu: fix spacing when no temperature shown

common/.local/libexec/statusbar/sb-cpu

@@ -4,7 +4,8 @@
 n_cpu=$(grep -c 'cpu[0-9]\+' /proc/stat)
 cache=$XDG_RUNTIME_DIR/cpubarscache
 
-temp="$(sensors | awk '/CPU/ {printf ("%.f°C", $2)}' | tr -d "+") "
+temp="$(sensors | awk '/CPU/ {printf ("%.f°C", $2)}' | tr -d "+")"
+[ -n "$temp" ] && temp="${temp} "
 
 new=$(awk '/cpu[0-9]+/ { printf "%d %d\n", $5, ($2 + $3 + $4 + $5) }' /proc/stat 2>/dev/null)
 
@@ -19,7 +20,6 @@ printf "%b" "  $temp<span ${bggray}>"
 first=true
 IFS='
 '
-
 for i in $(seq "$n_cpu"); do
     old_idle=$(echo "$old" | awk -v i="$i" 'NR==i { print $1 }')
     old_total=$(echo "$old" | awk -v i="$i" 'NR==i { print $2 }')