Quick fix to incorrect error messages when writing to compressed or encrypted files.

core/io/file_access_compressed.cpp

@@ -327,14 +327,14 @@ Error FileAccessCompressed::get_error() const {
 
 void FileAccessCompressed::flush() {
 	ERR_FAIL_COND_MSG(!f, "File must be opened before use.");
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in read mode.");
+	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
 
 	// compressed files keep data in memory till close()
 }
 
 void FileAccessCompressed::store_8(uint8_t p_dest) {
 	ERR_FAIL_COND_MSG(!f, "File must be opened before use.");
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in read mode.");
+	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
 
 	WRITE_FIT(1);
 	write_ptr[write_pos++] = p_dest;

core/io/file_access_encrypted.cpp

@@ -256,7 +256,7 @@ Error FileAccessEncrypted::get_error() const {
 }
 
 void FileAccessEncrypted::store_buffer(const uint8_t *p_src, int p_length) {
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in read mode.");
+	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
 
 	if (pos < data.size()) {
 		for (int i = 0; i < p_length; i++) {
@@ -272,13 +272,13 @@ void FileAccessEncrypted::store_buffer(const uint8_t *p_src, int p_length) {
 }
 
 void FileAccessEncrypted::flush() {
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in read mode.");
+	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
 
 	// encrypted files keep data in memory till close()
 }
 
 void FileAccessEncrypted::store_8(uint8_t p_dest) {
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in read mode.");
+	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
 
 	if (pos < data.size()) {
 		data.write[pos] = p_dest;