fix #9185. ah, numbers, it doesn't matter if they're correct, right?

src/codegen.cpp

@@ -3685,12 +3685,12 @@ static Function *emit_function(jl_lambda_info_t *lam, bool cstyle)
  if (jlrettype == (jl_value_t*)jl_bottom_type)
  f->setDoesNotReturn();
 #if defined(_OS_WINDOWS_) && !defined(_CPU_X86_64_)
- // tell Win32 to realign the stack to the next 8-byte boundary
+ // tell Win32 to realign the stack to the next 16-byte boundary
  // upon entry to any function. This achieves compatibility
- // with both MinGW-GCC (which assumes an 8-byte-aligned stack) and
- // Windows (which uses a 2-byte-aligned stack)
+ // with both MinGW-GCC (which assumes an 16-byte-aligned stack) and
+ // i686 Windows (which uses a 4-byte-aligned stack)
  AttrBuilder *attr = new AttrBuilder();
- attr->addStackAlignmentAttr(8);
+ attr->addStackAlignmentAttr(16);
 #if LLVM32 && !LLVM33
  f->addAttribute(Attributes::FunctionIndex,
  Attributes::get(f->getContext(),*attr));