Merge pull request #1211 from luoliwoshang/emb/start

fix: set correct argc=0 in _start() function

internal/build/build.go

@@ -722,8 +722,7 @@ call i32 @setvbuf(ptr %stderr_ptr, ptr null, i32 2, %size_t 0)
 	startDefine := `
 define weak void @_start() {
   ; argc = 0
-  %argc_val = icmp eq i32 0, 0
-  %argc = zext i1 %argc_val to i32
+  %argc = add i32 0, 0
   ; argv = null
   %argv = inttoptr i64 0 to i8**
   call i32 @main(i32 %argc, i8** %argv)