don't apply the spell check on all the file if no changes (#4031)

Before that: $time git commit --amend 2> log real 7m19.811s user 49m14.012s sys 0m16.668s $ls -lh log -rw-rw-r-- 1 sbrunner sbrunner 1,8M janv. 20 14:05 log
qgis · Jan 20, 2017 · 4543835 · 4543835
1 parent f389cea
commit 4543835
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/scripts/prepare-commit.sh b/scripts/prepare-commit.sh
@@ -41,7 +41,9 @@ set -e
 
 # determine changed files
 MODIFIED=$(git status --porcelain| sed -ne "s/^ *[MA]  *//p" | sort -u)
-${TOPLEVEL}/scripts/spell_check/check_spelling.sh $MODIFIED
+if  [ "$MODIFIED" != "" ]; then
+    ${TOPLEVEL}/scripts/spell_check/check_spelling.sh $MODIFIED
+fi
 
 
 if [ -z "$MODIFIED" ]; then

diff --git a/scripts/spell_check/check_spelling.sh b/scripts/spell_check/check_spelling.sh
@@ -41,6 +41,9 @@ shift $(expr $OPTIND - 1)
 if [ ! $# -eq 0 ]; then
   EXCLUDE=$(cat $AGIGNORE | sed -e 's/\s*#.*$//' -e '/^\s*$/d' | tr '\n' '|' | sed -e 's/|$//')
   INPUTFILES=$(echo $@ | tr -s '[[:blank:]]' '\n' | egrep -iv "$EXCLUDE" | tr '\n' ' ' )
+  if [ "$INPUTFILES" == "" ]; then
+    exit 0
+  fi
   echo "Running spell check on files: $INPUTFILES"
 else
   INPUTFILES="."