make dillo compile with clang

* Variable length arrays are not allowed in C++. They are supported in
  C99 and gcc seems to accept them in C++ mode.
  Replace the few places where variable length arrays are used.
* The widget member in ComplexButtonResource was colliding with the
  widget member of FltkResource, so rename it to childWidget.

1 files changed, 1 insertions, 1 deletions

diff --git a/dpi/downloads.cc b/dpi/downloads.cc
index 5aa7a87c..69750320 100644
--- a/dpi/downloads.cc
+++ b/dpi/downloads.cc
@@ -593,7 +593,7 @@ void DLItem::update_size(int new_sz)
 static void read_log_cb(int fd_in, void *data)
 {
    DLItem *dl_item = (DLItem *)data;
-   int BufLen = 4096;
+   const int BufLen = 4096;
    char Buf[BufLen];
    ssize_t st;
    int ret = -1;