/tools/build-random: fix the scripts, quoting hell

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

tools/build-random/unique-error

@@ -2,12 +2,11 @@
 
 declare -A err
 
-HOW="grep -wi error $file"
 
 for n in ko-build*; do
     test -d $n || continue
     file=$n/build
-    S=$($HOW | sort | md5sum | awk '{print $1}')
+    S=$(grep -wi error $file | sort | md5sum | awk '{print $1}')
     err[$S]=$n
 done
 for n in ${err[*]}; do

tools/build-random/unique-warning

@@ -3,12 +3,11 @@
 
 declare -A warn
 
-HOW="grep -wi warning $file"
 
 for n in warn-build*; do
     test -d $n || continue
     file=$n/build
-    S=$($HOW | sort | md5sum | awk '{print $1}')
+    S=$(grep -wi warning $file | sort | md5sum | awk '{print $1}')
     warn[$S]=$n
 done
 for n in ${warn[*]}; do