stb_sprintf.h: Don't compare uninitialized value when using zero.

This prevents a "Conditional jump or move depends on uninitialised value(s)" error from valgrind when using zero as an argument in line 1045.
ago%!(EXTRA string=8 years) · 747b8d8f71
parent 9d9f75eb68
commit 747b8d8f71
1 changed files with 3 additions and 2 deletions
--- a/stb_sprintf.h
+++ b/stb_sprintf.h
@ -12,6 +12,7 @@
 //    github:d26435
 //    github:trex78
 //    Jari Komppa (SI suffixes)
+//    Rohit Nirmal
 //
 // LICENSE:
 //
@ -1025,11 +1026,11 @@ STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB *callback,
               n64 = 0;
            }
            if ((fl & STBSP__TRIPLET_COMMA) == 0) {
-               while (n) {
+               do {
                  s -= 2;
                  *(stbsp__uint16 *)s = *(stbsp__uint16 *)&stbsp__digitpair[(n % 100) * 2];
                  n /= 100;
-               }
+               } while (n);
            }
            while (n) {
               if ((fl & STBSP__TRIPLET_COMMA) && (l++ == 3)) {