pbot-vm: escape malformed Unicode on STDOUT

applets/pbot-vm/host/lib/Languages/_default.pm

@@ -316,6 +316,10 @@ sub execute {
 
         if ($line =~ /^result:/) {
             $line =~ s/^result://;
+
+            my $octets = decode('UTF-8', $line, sub { sprintf '\\\\x%X', shift });
+            $line = encode('UTF-8', $octets, Encode::FB_CROAK);
+
             my $compile_out = decode_json($line);
             $result .= "$compile_out->{result}\n";
             $got_result = 1;

lib/PBot/VERSION.pm

@@ -25,7 +25,7 @@ use PBot::Imports;
 # These are set by the /misc/update_version script
 use constant {
     BUILD_NAME     => "PBot",
-    BUILD_REVISION => 4525,
+    BUILD_REVISION => 4526,
     BUILD_DATE     => "2022-04-04",
 };