Break on no /opt/jdk (#2024)

* Break on no `/opt/jdk`
* Remove unneeded calls to reset

Fixes #2019

Signed-off-by: Ethan Dye <mrtops03@gmail.com>

Author: ecdye

functions/java-jre.bash

@@ -50,11 +50,9 @@ adoptium_install_apt() {
   if ! dpkg -s "temurin-${1}-jre" &> /dev/null; then # Check if already is installed
     adoptium_fetch_apt "$1"
     echo -n "$(timestamp) [openHABian] Installing Adoptium Eclipse Temurin JDK... "
-    cond_redirect java_alternatives_reset
     if cond_redirect apt-get install --yes -o DPkg::Lock::Timeout="$APTTIMEOUT" "temurin-${1}-jre"; then echo "OK"; else echo "FAILED"; return 1; fi
   else
     echo -n "$(timestamp) [openHABian] Reconfiguring Adoptium Eclipse Temurin JDK... "
-    cond_redirect java_alternatives_reset
     if cond_redirect dpkg-reconfigure "temurin-${1}-jre"; then echo "OK"; else echo "FAILED"; return 1; fi
     if is_aarch64; then
       update-alternatives --set java /usr/lib/jvm/temurin-"${1}"-jre-arm64/bin/java
@@ -95,15 +93,13 @@ openjdk_install_apt() {
   if ! dpkg -s "openjdk-${1}-jre-headless" &> /dev/null; then # Check if already is installed
     openjdk_fetch_apt "$1"
     echo -n "$(timestamp) [openHABian] Installing OpenJDK ${1}... "
-    cond_redirect java_alternatives_reset
     if [[ $1 == "21" ]]; then
       if cond_redirect apt-get install --yes -o DPkg::Lock::Timeout="$APTTIMEOUT" -t unstable "openjdk-${1}-jre-headless"; then echo "OK"; else echo "FAILED"; return 1; fi
     else
       if cond_redirect apt-get install --yes -o DPkg::Lock::Timeout="$APTTIMEOUT" "openjdk-${1}-jre-headless"; then echo "OK"; else echo "FAILED"; return 1; fi
     fi
   else
     echo -n "$(timestamp) [openHABian] Reconfiguring OpenJDK ${1}... "
-    cond_redirect java_alternatives_reset
     if cond_redirect dpkg-reconfigure "openjdk-${1}-jre-headless"; then echo "OK"; else echo "FAILED"; return 1; fi
     if is_aarch64; then
       update-alternatives --set java /usr/lib/jvm/java-"${1}"-openjdk-arm64/bin/java
@@ -121,6 +117,9 @@ java_alternatives_reset() {
   local jdkBin
 
   jdkBin="$(find /opt/jdk/*/bin ... -print -quit)"
+  if [[ -z "$jdkBin" ]]; then
+    return 0
+  fi
 
   # shellcheck disable=SC2016
   cond_redirect find "$jdkBin" -maxdepth 1 -perm -111 -type f -exec bash -c 'update-alternatives --quiet --remove-all $(basename {})' \;