Fix clang-format warning in idct.c codebase
Fix clang-format warning in idct.c codebase

Change-Id: I720e3ab61300299a44295794bdf86490e33df12f

luctrudeau/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom,smarter/aom,mbebenita/aom,GrokImageCompression/aom,smarter/aom,smarter/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,GrokImageCompression/aom,luctrudeau/aom,GrokImageCompression/aom,luctrudeau/aom,mbebenita/aom,smarter/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,luctrudeau/aom,luctrudeau/aom,mbebenita/aom,luctrudeau/aom,GrokImageCompression/aom