Vectors: Use clear() and has().

Use clear() instead of resize(0).

Use has() instead of "find(p_val) != -1".

core/io/compression.cpp

@@ -212,7 +212,7 @@ int Compression::decompress_dynamic(Vector<uint8_t> *p_dst_vect, int p_max_dst_s
 	strm.avail_in = p_src_size;
 
 	// Ensure the destination buffer is empty
-	p_dst_vect->resize(0);
+	p_dst_vect->clear();
 
 	// decompress until deflate stream ends or end of file
 	do {
@@ -244,7 +244,7 @@ int Compression::decompress_dynamic(Vector<uint8_t> *p_dst_vect, int p_max_dst_s
 						WARN_PRINT(strm.msg);
 					}
 					(void)inflateEnd(&strm);
-					p_dst_vect->resize(0);
+					p_dst_vect->clear();
 					return ret;
 			}
 		} while (strm.avail_out > 0 && strm.avail_in > 0);
@@ -254,7 +254,7 @@ int Compression::decompress_dynamic(Vector<uint8_t> *p_dst_vect, int p_max_dst_s
 		// Enforce max output size
 		if (p_max_dst_size > -1 && strm.total_out > (uint64_t)p_max_dst_size) {
 			(void)inflateEnd(&strm);
-			p_dst_vect->resize(0);
+			p_dst_vect->clear();
 			return Z_BUF_ERROR;
 		}
 	} while (ret != Z_STREAM_END);

core/io/packet_peer.cpp

@@ -39,7 +39,7 @@ void PacketPeer::set_encode_buffer_max_size(int p_max_size) {
 	ERR_FAIL_COND_MSG(p_max_size < 1024, "Max encode buffer must be at least 1024 bytes");
 	ERR_FAIL_COND_MSG(p_max_size > 256 * 1024 * 1024, "Max encode buffer cannot exceed 256 MiB");
 	encode_buffer_max_size = next_power_of_2(p_max_size);
-	encode_buffer.resize(0);
+	encode_buffer.clear();
 }
 
 int PacketPeer::get_encode_buffer_max_size() const {

core/io/stream_peer.cpp

@@ -98,7 +98,7 @@ Array StreamPeer::_get_partial_data(int p_bytes) {
 	Error err = get_partial_data(&w[0], p_bytes, received);
 
 	if (err != OK) {
-		data.resize(0);
+		data.clear();
 	} else if (received != data.size()) {
 		data.resize(received);
 	}
@@ -563,7 +563,7 @@ Vector<uint8_t> StreamPeerBuffer::get_data_array() const {
 }
 
 void StreamPeerBuffer::clear() {
-	data.resize(0);
+	data.clear();
 	pointer = 0;
 }