message: fix unit test with last LLVM on 64-bit platforms
diff: +target triple = "x86-unknown-linux-gnu"
  +target datalayout = "e-p:32:32"
  +
  define i8* @src(i32 %size) {
  %call1 = call i8* @malloc(i32 %size)
  ret i8* %call1
  }
  define i8* @tgt(i32 %size) {
  -; %calloc = call i8* @malloc(i32 %size)
  %calloc = call i8* @calloc(i32 1, i32 %size)
  ret i8* %calloc
  }
  