Fix compile error on riscv64

Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>

fix-riscv64-compile-uintptr.patch

@@ -0,0 +1,13 @@
+diff --git a/stb_sprintf.h b/stb_sprintf.h
+index ca432a6..fb49e4d 100644
+--- a/stb_sprintf.h
++++ b/stb_sprintf.h
+@@ -230,7 +230,7 @@ STBSP__PUBLICDEC void STB_SPRINTF_DECORATE(set_separators)(char comma, char peri
+ #define stbsp__uint16 unsigned short
+ 
+ #ifndef stbsp__uintptr
+-#if defined(__ppc64__) || defined(__powerpc64__) || defined(__aarch64__) || defined(_M_X64) || defined(__x86_64__) || defined(__x86_64) || defined(__s390x__)
++#if defined(__ppc64__) || defined(__powerpc64__) || defined(__aarch64__) || defined(_M_X64) || defined(__x86_64__) || defined(__x86_64) || defined(__s390x__) || defined(__LP64__) || (defined(__riscv) && __riscv_xlen == 64)
+ #define stbsp__uintptr stbsp__uint64
+ #else
+ #define stbsp__uintptr stbsp__uint32

stb.spec

@@ -24,7 +24,7 @@ Name:           stb
 #   https://github.com/nothings/stb/issues/1101
 %global snapinfo ^%{snapdate}git%(echo '%{commit}' | cut -b -7)
 Version:        0%{snapinfo}
-Release:        %autorelease -p
+Release:        %autorelease -p -e 0.riscv64
 Summary:        Single-file public domain libraries for C/C++
 
 # See LICENSE.
@@ -105,6 +105,10 @@ Patch:          %{url}/pull/1236.patch
 # https://github.com/nothings/stb/pull/1297
 Patch:          %{url}/pull/1297.patch
 
+
+# riscv64 compile fix
+Patch1000: fix-riscv64-compile-uintptr.patch
+
 %global stb_c_lexer_version 0.12
 %global stb_connected_components_version 0.96
 %global stb_divide_version 0.94