pm_patch.env: patch -r /dev/null --no-backup-if-mismatch by default

Signed-off-by: Roberto A. Foglietta <roberto.foglietta@gmail.com>

src/tools/pm_patch.env

@@ -105,8 +105,8 @@ fi
 pm_patch(){
   log "pm_patch $@"
   $PATCH_EXEC "$@" --ignore-whitespace --remove-empty-files -F 3 -p 1 \
-    --unified --force -d "$ROOT_DIR" --quiet -i "$PATCH_FILE" 2>&1 | \
-      tee -a "$PM_LOG_FILE"
+    --unified --force -d "$ROOT_DIR" --quiet -i "$PATCH_FILE" 2>&1 \
+    -r /dev/null --no-backup-if-mismatch | tee -a "$PM_LOG_FILE"
   [ $? -eq 0 ] && log "returns OK"
 }
 
@@ -127,7 +127,7 @@ remove_text_patch() {
   log "Revert patch"
   logbar
   log
-  pm_patch -R --no-backup-if-mismatch || failure
+  pm_patch -R || failure
   # RAF, BUG FIX: here below the logic of the original code which exits when
   #               succed but inhibiting the back-up of the applied patch
   # pm_patch -R --no-backup-if-mismatch && success
@@ -233,7 +233,7 @@ install_text_patch() {
   log "Apply patch"
   logbar
   log
-  pm_patch --no-backup-if-mismatch || failure
+  pm_patch || failure
   # RAF, BUG FIX: here below the logic of the original code which exits when
   #               succed but inhibiting the back-up of the applied patch
   #               Morover, it is sane to exit in case of failure to avoid the