xmldom: install @jazzer.js/core as part of build.sh (#13107)

it was [dropped from `devDependencies` in
xmldom](xmldom/xmldom#845), since it can no
longer be installed reliably on all machines.

Author: karfau

projects/xmldom/build.sh

@@ -15,13 +15,19 @@
 #
 ################################################################################
 
-# build project
+# install dependencies
 npm ci
-unzip node_modules/xmltest/xmltest.zip
+# no longer part of xmldom devDependencies since it can no longer be installed reliably
+npm i -D @jazzer.js/core
 
-# Copy corpus out
-cp -rf $SRC/xmldom/xmltest $OUT/xmltest
+# prepare corpus
+XMLTEST_CORPUS=$OUT/xmldom/xmltest
+mkdir -p $XMLTEST_CORPUS
+# extract all *.xml files without a folder structure,
+# renaming duplicate filenames with ~, ~1, ~2, ...
+# into the target directory
+unzip -Bj node_modules/xmltest/xmltest.zip '*.xml' -d $XMLTEST_CORPUS
 
 # build fuzzers
-compile_javascript_fuzzer xmldom fuzz/dom-parser.xml.target.js --sync --timeout=10 xmltest
-compile_javascript_fuzzer xmldom fuzz/dom-parser.html.target.js --sync --timeout=10 xmltest
+compile_javascript_fuzzer xmldom fuzz/dom-parser.xml.target.js --sync --timeout=10 $XMLTEST_CORPUS
+compile_javascript_fuzzer xmldom fuzz/dom-parser.html.target.js --sync --timeout=10 $XMLTEST_CORPUS