修复错误的预处理

Author: Jiu-xiao

src/printf/printf.c

@@ -169,7 +169,7 @@
 #define FLAGS_SIGNED    (1U << 14U)
   // Only used with PRINTF_SUPPORT_MSVC_STYLE_INTEGER_SPECIFIERS
 
-#ifdef PRINTF_SUPPORT_MSVC_STYLE_INTEGER_SPECIFIERS
+#if PRINTF_SUPPORT_MSVC_STYLE_INTEGER_SPECIFIERS
 
 #define FLAGS_INT8 FLAGS_CHAR
 
@@ -1082,7 +1082,7 @@ static inline void format_string_loop(output_gadget_t* output, const char* forma
 
     // evaluate length field
     switch (*format) {
-#ifdef PRINTF_SUPPORT_MSVC_STYLE_INTEGER_SPECIFIERS
+#if PRINTF_SUPPORT_MSVC_STYLE_INTEGER_SPECIFIERS
       case 'I' : {
         ADVANCE_IN_FORMAT_STRING(format);
         // Greedily parse for size in bits: 8, 16, 32 or 64