epm play: return 0 if a package is already installed from the repo

play.d/chromium-gost.sh

@@ -9,7 +9,8 @@ DESCRIPTION="Chromium with GOST support from the official site"
 
 # TODO: use get_pkgvendor = "ALT Linux Team"
 if epm installed chromium-gost ; then
-    fatal "Package chromium-gost is already installed from ALT repository."
+    echo "Package chromium-gost is already installed from ALT repository."
+    exit 0
 fi
 
 #arch=$($DISTRVENDOR --distro-arch)

play.d/yandex-browser.sh

@@ -18,10 +18,11 @@ SUPPORTEDARCHES="x86_64"
 
 if epm installed yandex-browser-stable && [ "$(get_pkgvendor yandex-browser-stable)" = "YANDEX LLC" ] ; then
     if [ "$(epm print field Vendor for package yandex-browser-stable)" = "Yandex Browser Team <browser@support.yandex.ru>" ] ; then
-        fatal "Package yandex-browser-stable is already manually from https://browser.yandex.ru/."
+        echo "Package yandex-browser-stable is already installed manually from https://browser.yandex.ru/."
     else
-        fatal "Package yandex-browser-stable is already installed from ALT repository."
+        echo "Package yandex-browser-stable is already installed from ALT repository."
     fi
+    exit 0
 fi