libsframe: bfd: use uint32_t for return type of get_num_fidx APIs

Keep the data types usage in libsframe look consistent.

bfd/
	* elf-sframe.c (_bfd_elf_merge_section_sframe): Use uint32_t
	type alias.
	* libsframe/sframe.c (sframe_decoder_get_funcdesc_at_index):
	Likewise.
	(sframe_decoder_get_num_fidx): Likewise.
	(sframe_encoder_get_num_fidx): Likewise.
include/
	* sframe-api.h (sframe_decoder_get_num_fidx): Likewise.
	(sframe_encoder_get_num_fidx): Likewise.

bfd/elf-sframe.c

diff --git a/bfd/elf-sframe.c b/bfd/elf-sframe.c
index 069f756..013a892 100644
--- a/bfd/elf-sframe.c
+++ b/bfd/elf-sframe.c
@@ -403,10 +403,10 @@
   /* Iterate over the function descriptor entries and the FREs of the
      function from the decoder context.  Add each of them to the encoder
      context, if suitable.  */
-  unsigned int i = 0, j = 0, cur_fidx = 0;
+  uint32_t i = 0, j = 0, cur_fidx = 0;
 
-  unsigned int num_fidx = sframe_decoder_get_num_fidx (sfd_ctx);
-  unsigned int num_enc_fidx = sframe_encoder_get_num_fidx (sfe_ctx);
+  uint32_t num_fidx = sframe_decoder_get_num_fidx (sfd_ctx);
+  uint32_t num_enc_fidx = sframe_encoder_get_num_fidx (sfe_ctx);
 
   for (i = 0; i < num_fidx; i++)
     {

include/sframe-api.h

diff --git a/include/sframe-api.h b/include/sframe-api.h
index 9cb2db0..7594011 100644
--- a/include/sframe-api.h
+++ b/include/sframe-api.h
@@ -122,7 +122,7 @@
 
 /* Return the number of function descriptor entries in the SFrame decoder
    DCTX.  */
-extern unsigned int
+extern uint32_t
 sframe_decoder_get_num_fidx (sframe_decoder_ctx *dctx);
 
 /* Get the fixed FP offset from the decoder context DCTX.  */
@@ -219,7 +219,7 @@
 
 /* Return the number of function descriptor entries in the SFrame encoder
    ENCODER.  */
-extern unsigned int
+extern uint32_t
 sframe_encoder_get_num_fidx (sframe_encoder_ctx *encoder);
 
 /* Add an FRE to function at FUNC_IDX'th function descriptor index entry in

libsframe/sframe.c

diff --git a/libsframe/sframe.c b/libsframe/sframe.c
index 40927f0..2914243 100644
--- a/libsframe/sframe.c
+++ b/libsframe/sframe.c
@@ -349,7 +349,7 @@
 				      uint32_t func_idx)
 {
   sframe_func_desc_entry *fdep;
-  unsigned int num_fdes;
+  uint32_t num_fdes;
   int err;
 
   num_fdes = sframe_decoder_get_num_fidx (ctx);
@@ -1119,10 +1119,10 @@
 /* Return the number of function descriptor entries in the SFrame decoder
    DCTX.  */
 
-unsigned int
+uint32_t
 sframe_decoder_get_num_fidx (sframe_decoder_ctx *ctx)
 {
-  unsigned int num_fdes = 0;
+  uint32_t num_fdes = 0;
   sframe_header *dhp = NULL;
   dhp = sframe_decoder_get_header (ctx);
   if (dhp)
@@ -1337,10 +1337,10 @@
 /* Return the number of function descriptor entries in the SFrame encoder
    ENCODER.  */
 
-unsigned int
+uint32_t
 sframe_encoder_get_num_fidx (sframe_encoder_ctx *encoder)
 {
-  unsigned int num_fdes = 0;
+  uint32_t num_fdes = 0;
   sframe_header *ehp = NULL;
   ehp = sframe_encoder_get_header (encoder);
   if (ehp)