tdf#105204 fix shellcheck warnings in solenv/bin/create-ids

Change-Id: Iab3855cdd8fb1ae3719dd7267b1592eea0ef1e22
SC2006: Use $(..) instead of legacy `..`.
SC2035: Use ./*/* so names with dashes won't become options.
SC2086: Double quote to prevent globbing and word splitting.
SC2046: Quote this to prevent word splitting.
Reviewed-on: https://gerrit.libreoffice.org/37832Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>

solenv/bin/create-ids

@@ -11,8 +11,8 @@
 
 # TODO: should this include workdir headers?
 if [ "$1" = "--with-outpath" ]; then
-    dirs="`ls -d */* | sed -e '/\(\/\(cscope\.\|tags\|ID\)\)\|^\(clone\|workdir\|instdir\)\//d'`"
+    dirs="$(ls -d ./*/* | sed -e '/\(\/\(cscope\.\|tags\|ID\)\)\|^\(clone\|workdir\|instdir\)\//d')"
 else
-    dirs="`ls -d */* | sed -e '/\(\/\(cscope\.\|tags\|ID\)\)\|^\(clone\|workdir\|instdir\)\//d'`"
+    dirs="$(ls -d ./*/* | sed -e '/\(\/\(cscope\.\|tags\|ID\)\)\|^\(clone\|workdir\|instdir\)\//d')"
 fi
-mkid --lang-map=`dirname $0`/id-lang.map --include='C C++ asm perl java make' --statistics $dirs
+mkid --lang-map="$(dirname "$0")"/id-lang.map --include='C C++ asm perl java make' --statistics "$dirs"