update stb_vorbis version

README.md

@@ -20,7 +20,7 @@ by Jorge L. "VinoBS" Rodriguez, and stb_sprintf by Jeff Roberts.
 
 library    | lastest version | category | LoC | description
 --------------------- | ---- | -------- | --- | --------------------------------
-**[stb_vorbis.c](stb_vorbis.c)** | 1.20 | audio | 5563 | decode ogg vorbis files from file/memory to float/16-bit signed output
+**[stb_vorbis.c](stb_vorbis.c)** | 1.21 | audio | 5569 | decode ogg vorbis files from file/memory to float/16-bit signed output
 **[stb_image.h](stb_image.h)** | 2.26 | graphics | 7762 | image loading/decoding from file/memory: JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC
 **[stb_truetype.h](stb_truetype.h)** | 1.24 | graphics | 5011 | parse, decode, and rasterize characters from truetype fonts
 **[stb_image_write.h](stb_image_write.h)** | 1.15 | graphics | 1690 | image writing to disk: PNG, TGA, BMP
@@ -43,7 +43,7 @@ library    | lastest version | category | LoC | description
 **[stb_include.h](stb_include.h)** | 0.02 | misc | 295 | implement recursive #include support, particularly for GLSL
 
 Total libraries: 21
-Total lines of C code: 56524
+Total lines of C code: 56530
 
 
 FAQ

stb_vorbis.c

@@ -1,4 +1,4 @@
-// Ogg Vorbis audio decoder - v1.20 - public domain
+// Ogg Vorbis audio decoder - v1.21 - public domain
 // http://nothings.org/stb_vorbis/
 //
 // Original version written by Sean Barrett in 2007.
@@ -36,6 +36,7 @@
 //    AnthoFoxo
 //
 // Partial history:
+//    1.21    - 2021-07-02 - fix bug for files with no comments
 //    1.20    - 2020-07-11 - several small fixes
 //    1.19    - 2020-02-05 - warnings
 //    1.18    - 2020-02-02 - fix seek bugs; parse header comments; misc warnings etc.