stb_image: Fix broken indenting introduced earlier

stb_image.h

@@ -5550,23 +5550,23 @@ static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req
          psize = (info.offset - info.extra_read - info.hsz) >> 2;
    }
    if (psize == 0) {
-	  // accept some number of extra bytes after the header, but if the offset points either to before
+      // accept some number of extra bytes after the header, but if the offset points either to before
-	  // the header ends or implies a large amount of extra data, reject the file as malformed
+      // the header ends or implies a large amount of extra data, reject the file as malformed
-	  int bytes_read_so_far = s->callback_already_read + (int)(s->img_buffer - s->img_buffer_original);
+      int bytes_read_so_far = s->callback_already_read + (int)(s->img_buffer - s->img_buffer_original);
-	  int header_limit = 1024; // max we actually read is below 256 bytes currently.
+      int header_limit = 1024; // max we actually read is below 256 bytes currently.
-	  int extra_data_limit = 256*4; // what ordinarily goes here is a palette; 256 entries*4 bytes is its max size.
+      int extra_data_limit = 256*4; // what ordinarily goes here is a palette; 256 entries*4 bytes is its max size.
-	  if (bytes_read_so_far <= 0 || bytes_read_so_far > header_limit) {
+      if (bytes_read_so_far <= 0 || bytes_read_so_far > header_limit) {
-		 return stbi__errpuc("bad header", "Corrupt BMP");
+         return stbi__errpuc("bad header", "Corrupt BMP");
-	  }
+      }
-	  // we established that bytes_read_so_far is positive and sensible.
+      // we established that bytes_read_so_far is positive and sensible.
-	  // the first half of this test rejects offsets that are either too small positives, or
+      // the first half of this test rejects offsets that are either too small positives, or
-	  // negative, and guarantees that info.offset >= bytes_read_so_far > 0. this in turn
+      // negative, and guarantees that info.offset >= bytes_read_so_far > 0. this in turn
-	  // ensures the number computed in the second half of the test can't overflow.
+      // ensures the number computed in the second half of the test can't overflow.
-	  if (info.offset < bytes_read_so_far || info.offset - bytes_read_so_far > extra_data_limit) {
+      if (info.offset < bytes_read_so_far || info.offset - bytes_read_so_far > extra_data_limit) {
          return stbi__errpuc("bad offset", "Corrupt BMP");
       } else {
-		 stbi__skip(s, info.offset - bytes_read_so_far);
+         stbi__skip(s, info.offset - bytes_read_so_far);
-	  }
+      }
    }
 
    if (info.bpp == 24 && ma == 0xff000000)