docs: complete ASS/SSA positioning changelog entry; use scoped loop counters

Author: x15sr71

docs/CHANGES.TXT

@@ -1,6 +1,6 @@
 0.96 (2025-12-21)
 -----------------
-- New: Added ASS/SSA \pos-based positioning for CEA-608 captions when layout
+- New: Added ASS/SSA \pos-based positioning for CEA-608 captions when layout is simple (1-2 rows)
 - New: Added --list-tracks (-L) option to list all tracks in media files without processing
 - Fix: Garbled captions from HDHomeRun and I/P-only H.264 streams (#1109)
 - Fix: Enable stdout output for CEA-708 captions on Windows (#1693)

src/lib_ccx/ccx_encoders_ssa.c

@@ -196,9 +196,8 @@ int write_cc_buffer_as_ssa(struct eia608_screen *data, struct encoder_ctx *conte
 	int first_row = -1;
 	int x, y;
 	char pos_tag[64];
-	int i;
 
-	for (i = 0; i < 15; i++)
+	for (int i = 0; i < 15; i++)
 	{
 		if (data->row_used[i])
 		{
@@ -209,7 +208,7 @@ int write_cc_buffer_as_ssa(struct eia608_screen *data, struct encoder_ctx *conte
 	if (empty_buf)
 		return 0;
 
-	for (i = 0; i < 15; i++)
+	for (int i = 0; i < 15; i++)
 	{
 		if (data->row_used[i])
 			used_row_count++;
@@ -251,7 +250,7 @@ int write_cc_buffer_as_ssa(struct eia608_screen *data, struct encoder_ctx *conte
 
 	if (used_row_count > 0 && used_row_count <= 2)
 	{
-		for (i = 0; i < 15; i++)
+		for (int i = 0; i < 15; i++)
 		{
 			if (data->row_used[i])
 			{
@@ -278,7 +277,7 @@ int write_cc_buffer_as_ssa(struct eia608_screen *data, struct encoder_ctx *conte
 	/* ---- end ASS positioning ---- */
 
 	int line_count = 0;
-	for (i = 0; i < 15; i++)
+	for (int i = 0; i < 15; i++)
 	{
 		if (data->row_used[i])
 		{