Add error handling: exit if cd fails

contrib/tidy_datadir.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [ -d "$1" ]; then
-  cd "$1"
+  cd "$1" || exit 1
 else
   echo "Usage: $0 <datadir>" >&2
   echo "Removes obsolete Bitcoin database files" >&2

share/genbuild.sh

@@ -7,7 +7,7 @@
 
 export LC_ALL=C
 if [ $# -gt 1 ]; then
-    cd "$2"
+    cd "$2" || exit 1
 fi
 if [ $# -gt 0 ]; then
     FILE="$1"