more STB_IMAGE_STATIC fixes

tests/stb.dsp

@@ -90,10 +90,6 @@ SOURCE=.\grid_reachability.c
 # End Source File
 # Begin Source File
 
-SOURCE=..\docs\other_libs.md
-# End Source File
-# Begin Source File
-
 SOURCE=.\stb.c
 # End Source File
 # Begin Source File

tests/test_vorbis.c

@@ -1,3 +1,7 @@
+#define STB_IMAGE_STATIC
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
 #define STB_VORBIS_HEADER_ONLY
 #include "stb_vorbis.c"
 #include "stb.h"