Fix some Clang warnings.

CHANGES.md

@@ -6,6 +6,7 @@ v1.5.5 - YYYY-MM-DD
 -------------------
 
 - Fixed TTF cmap underflow error.
+- Fixed some Clang warnings.
 
 
 v1.5.4 - 2025-08-26

pdfio-content.c

@@ -2580,9 +2580,14 @@ copy_jpeg(pdfio_dict_t *dict,		// I - Dictionary
 
       // Expand our ICC buffer...
       if ((icc_temp = realloc(icc_data, icc_datalen + length)) == NULL)
+      {
+        free(icc_data);
 	return (NULL);
+      }
       else
+      {
 	icc_data = icc_temp;
+      }
 
       // Read the chunk into the ICC buffer...
       do

pdfio-file.c

@@ -1082,7 +1082,7 @@ pdfioFileOpen(
   pdf->version = strdup(line + 5);
 
   // Grab the last 1k of the file to find the start of the xref table...
-  if (_pdfioFileSeek(pdf, 1 - sizeof(line), SEEK_END) < 0)
+  if (_pdfioFileSeek(pdf, 1 - (int)sizeof(line), SEEK_END) < 0)
   {
     _pdfioFileError(pdf, "Unable to read startxref data.");
     goto error;
@@ -2632,7 +2632,7 @@ write_trailer(pdfio_file_t *pdf)	// I - PDF file
 
     // Write the "free" 0 object...
     memset(buffer, 0, sizeof(buffer));
-    pdfioStreamWrite(xref_st, buffer, offsize + 2);
+    pdfioStreamWrite(xref_st, buffer, (size_t)offsize + 2);
 
     // Then write the "allocated" objects...
     buffer[0] = 1;
@@ -2702,7 +2702,7 @@ write_trailer(pdfio_file_t *pdf)	// I - PDF file
 #endif // !_WIN32
       }
 
-      if (!pdfioStreamWrite(xref_st, buffer, offsize + 2))
+      if (!pdfioStreamWrite(xref_st, buffer, (size_t)offsize + 2))
       {
 	_pdfioFileError(pdf, "Unable to write cross-reference table.");
 	ret = false;