Merge pull request #360 from izzygomez/izzygomez/fix-air-color-logging

Remove noisy air segment logs during `generate_rc.sh`

Author: erikw

segments/air_color.sh

@@ -1,10 +1,8 @@
 TMUX_POWERLINE_DIR_TEMPORARY="/tmp/tmux-powerline_${USER}"
 air_temp_file="${TMUX_POWERLINE_DIR_TEMPORARY}/temp_air_file.txt"
 
-if [ -n $air_temp_file ]; then
-    TMUX_POWERLINE_SEG_AIR_COLOR=$(awk '{print $NF}' $air_temp_file)
+if [ -n "$air_temp_file" ] && [ -f "$air_temp_file" ]; then
+    TMUX_POWERLINE_SEG_AIR_COLOR=$(awk '{print $NF}' "$air_temp_file")
 fi
 
 TMUX_POWERLINE_SEG_AIR_COLOR="${TMUX_POWERLINE_SEG_AIR_COLOR:-'37'}"
-
-echo "$TMUX_POWERLINE_SEG_AIR_COLOR"