validate metadata on launch

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/meta/Version.cpp

@@ -18,12 +18,9 @@
 #include <QDateTime>
 
 #include "JsonFormat.h"
-#include "minecraft/PackProfile.h"
 
 Meta::Version::Version(const QString& uid, const QString& version) : BaseVersion(), m_uid(uid), m_version(version) {}
 
-Meta::Version::~Version() {}
-
 QString Meta::Version::descriptor()
 {
     return m_version;
@@ -71,6 +68,9 @@ void Meta::Version::mergeFromList(const Meta::Version::Ptr& other)
     if (m_volatile != other->m_volatile) {
         setVolatile(other->m_volatile);
     }
+    if (!other->m_sha256.isEmpty()) {
+        m_sha256 = other->m_sha256;
+    }
 }
 
 void Meta::Version::merge(const Version::Ptr& other)