Fix init bitfield padding with size 32/64

The init code did not work for padding bitfields with size 32 and 64.

tccgen.c

@@ -7392,7 +7392,9 @@ static int decl_designator(init_params *p, CType *type, unsigned long c,
             c += index * elem_size;
         } else {
             f = *cur_field;
-	    while (f && (f->v & SYM_FIRST_ANOM) && (f->type.t & VT_BITFIELD))
+	    /* Skip bitfield padding. Also with size 32 and 64. */
+	    while (f && (f->v & SYM_FIRST_ANOM) &&
+		   is_integer_btype(f->type.t & VT_BTYPE))
 	        *cur_field = f = f->next;
             if (!f)
                 tcc_error("too many initializers");

tests/tests2/90_struct-init.c

@@ -371,6 +371,22 @@ void test_init_struct_from_struct(void)
         );
 }
 
+typedef struct {
+    unsigned int a;
+    unsigned int : 32;
+    unsigned int b;
+    unsigned long : 64;
+    unsigned int c;
+} tst_bf;
+
+tst_bf arr[] = { { 1, 2, 3 } };
+
+void
+test_init_bf(void)
+{
+    printf ("%s: %d %d %d\n", __FUNCTION__, arr[0].a, arr[0].b, arr[0].c);
+}
+
 
 int main()
 {
@@ -403,5 +419,6 @@ int main()
   test_zero_init();
   test_init_ranges();
   test_init_struct_from_struct();
+  test_init_bf();
   return 0;
 }

tests/tests2/90_struct-init.expect

@@ -56,3 +56,4 @@ sea_fill1: okay
 sea_fill2: okay
 1438
 test_init_struct_from_struct: 1 2 3 4 - 1 2 3 4 - 3 4 5 6
+test_init_bf: 1 2 3