Use set -e to handle errors better in the build scripts

scripts/rebuildPatches.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+(
+set -e
 PS1="$"
 basedir=$(realpath "$1")
 workdir="$basedir/work"
@@ -15,7 +17,9 @@ function cleanupPatches {
 
         testver=$(echo "$diffs" | tail -n 2 | grep -ve "^$" | tail -n 1 | grep "$gitver")
         if [ "x$testver" != "x" ]; then
+            set +e
             diffs=$(echo "$diffs" | sed 'N;$!P;$!D;$d')
+            set -e
         fi
 
         if [ "x$diffs" == "x" ] ; then
@@ -45,3 +49,4 @@ function savePatches {
 
 savePatches "$workdir/Spigot/Spigot-API" "Paper-API"
 savePatches "$workdir/Spigot/Spigot-Server" "Paper-Server"
+)