Everywhere: Make ByteBuffer::{create_*,copy}() OOM-safe

Author: https://github.com/alimpfard
Commit: 97e97bccab
Pull-request: https://github.com/SerenityOS/serenity/pull/9832
Reviewed-by: https://github.com/IdanHo

Tests/LibIMAP/TestQuotedPrintable.cpp

@@ -17,7 +17,7 @@ TEST_CASE(test_decode)
 
     auto decode_equal_byte_buffer = [](const char* input, const char* expected, size_t expected_length) {
         auto decoded = IMAP::decode_quoted_printable(StringView(input));
-        EXPECT(decoded == ByteBuffer::copy(expected, expected_length));
+        EXPECT(decoded == *ByteBuffer::copy(expected, expected_length));
     };
 
     decode_equal("hello world", "hello world");