pwmconfig: Declare TMP1 and TMP2 on a separate line

Declare TMP1 and TMP2 on a separate line to make Coverity Scan happy.

Signed-off-by: Ondřej Lysoněk <olysonek@redhat.com>

prog/pwm/pwmconfig

@@ -330,7 +330,8 @@ STEP2_BELOW=31
 function pwmdetail()
 {
 	local P=$1 F=$2
-	local X PLOT= TMP1 TMP2
+	local X PLOT=
+	local TMP1 TMP2
 	local threshold=100000 pwm S
 
 	type $PLOTTER > /dev/null 2>&1