contrib: Ignore historical release notes for whitespace check

Lint checks should not test these, they are historical documents,
and we don't want to encourage silly changes to them to satisfy
a checker.

Hopefully makes travis pass again on master.

Tree-SHA512: 37e6716c4fd5e8a4e579f9b84042e6b0ac224836b6c851cd1ca3f7d46611ffd3003bed0ae08dd0457f69d6eaa485a0d21c631e7ef16b14bdb0f2f78ea700332d

contrib/devtools/lint-whitespace.sh

@@ -16,14 +16,14 @@ if [ -z "${TRAVIS_COMMIT_RANGE}" ]; then
 fi
 
 showdiff() {
-  if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- "." ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/"; then
+  if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- "." ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
     echo "Failed to get a diff"
     exit 1
   fi
 }
 
 showcodediff() {
-  if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/"; then
+  if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
     echo "Failed to get a diff"
     exit 1
   fi