Move dnsmasq disabling and config file rewriting into a dedicated subroutine

Signed-off-by: DL6ER <dl6er@dl6er.de>

automated install/basic-install.sh

@@ -2184,6 +2184,26 @@ FTLinstall() {
             popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
             # Install the FTL service
             printf "%b  %b %s\\n" "${OVER}" "${TICK}" "${str}"
+            return 0
+        # Otherwise,
+        else
+            # the download failed, so just go back to the original directory
+            popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
+            printf "%b  %b %s\\n" "${OVER}" "${CROSS}" "${str}"
+            printf "  %bError: Download of %s/%s failed (checksum error)%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}"
+            return 1
+        fi
+    # Otherwise,
+    else
+        popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
+        printf "%b  %b %s\\n" "${OVER}" "${CROSS}" "${str}"
+        # The URL could not be found
+        printf "  %bError: URL %s/%s not found%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}"
+        return 1
+    fi
+}
+
+disable_dnsmasq() {
     # dnsmasq can now be stopped and disabled if it exists
     if which dnsmasq &> /dev/null; then
         if check_service_active "dnsmasq";then
@@ -2202,24 +2222,6 @@ FTLinstall() {
     fi
     # Create /etc/dnsmasq.conf
     echo "conf-dir=/etc/dnsmasq.d" > "${conffile}"
-
-            return 0
-        # Otherwise,
-        else
-            # the download failed, so just go back to the original directory
-            popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
-            printf "%b  %b %s\\n" "${OVER}" "${CROSS}" "${str}"
-            printf "  %bError: Download of %s/%s failed (checksum error)%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}"
-            return 1
-        fi
-    # Otherwise,
-    else
-        popd > /dev/null || { printf "Unable to return to original directory after FTL binary download.\\n"; return 1; }
-        printf "%b  %b %s\\n" "${OVER}" "${CROSS}" "${str}"
-        # The URL could not be found
-        printf "  %bError: URL %s/%s not found%b\\n" "${COL_LIGHT_RED}" "${url}" "${binary}" "${COL_NC}"
-        return 1
-    fi
 }
 
 get_binary_name() {