Remove unnecessary check in dc_array_new_typed

Allocating Vec with 0 capacity is correct.

src/dc_array.rs

@@ -256,8 +256,7 @@ pub fn dc_array_new(initsize: size_t) -> *mut dc_array_t {
 }
 
 pub fn dc_array_new_typed(type_0: libc::c_int, initsize: size_t) -> *mut dc_array_t {
-    let capacity = if initsize < 1 { 1 } else { initsize as usize };
-    let mut array = dc_array_t::new(capacity);
+    let mut array = dc_array_t::new(initsize);
     array.type_0 = type_0;
     array.as_ptr()
 }