Name resolve any specified types in TypeParams

Type parameters can have defaults these need to be name resolved.

Addresses: #307

Author: philberty

gcc/rust/resolve/rust-ast-resolve-type.h

@@ -265,6 +265,12 @@ class ResolveGenericParam : public ResolverBase
 		       "generic param redefined multiple times");
 	rust_error_at (locus, "was defined here");
       });
+
+    // if it has a type lets resolve it
+    if (param.has_type ())
+      {
+	ResolveType::go (param.get_type ().get (), param.get_node_id ());
+      }
   }
 
 private:

gcc/testsuite/rust.test/xfail_compile/generic-default1.rs

@@ -0,0 +1,9 @@
+// { dg-error "unresolved type" "" { target { *-*-* } } 0 }
+
+struct Foo<A = i321>(A);
+// { dg-error "failed to resolve TypePath: i321" "" { target *-*-* } .-1 }
+
+fn main() {
+    let a;
+    a = Foo(123);
+}