apps: common: dng_writer: Add a default case for switch-case on a modulo

Clearly all cases in the switch are already satisfied, but some
compilers fail to realize this and spit out an error:

Compiler version: gcc 11.2.0 "aarch64-buildroot-linux-gnu-gcc.br_real (Buildroot 2021.11) 11.2.0"

../../src/apps/common/dng_writer.cpp: In function ‘void thumbScanlineIPU3(const FormatInfo&, void*, const void*, unsigned int, unsigned int)’:
../../src/apps/common/dng_writer.cpp:277:55: error: ‘val4’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  277 |                 uint8_t value = (val1 + val2 + val3 + val4) >> 10;
      |                                                       ^~~~
../../src/apps/common/dng_writer.cpp:277:48: error: ‘val3’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  277 |                 uint8_t value = (val1 + val2 + val3 + val4) >> 10;
      |                                                ^~~~
../../src/apps/common/dng_writer.cpp:277:41: error: ‘val2’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  277 |                 uint8_t value = (val1 + val2 + val3 + val4) >> 10;
      |                                         ^~~~
../../src/apps/common/dng_writer.cpp:277:34: error: ‘val1’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  277 |                 uint8_t value = (val1 + val2 + val3 + val4) >> 10;
      |                                  ^~~~

Add a default case for the switch-case on a modulo to silence this.

Bug: https://bugs.libcamera.org/show_bug.cgi?id=207
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

0 files changed, 0 insertions, 0 deletions