Report redefinition errors

Previously, the Resolver::error method was only checking for undefined
symbols, and not also checking for redefined symbols.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/resolver.rs b/src/resolver.rs
index c12279c..77ab348 100644
--- a/src/resolver.rs
+++ b/src/resolver.rs
@@ -125,7 +125,7 @@ impl Resolver {
     /// Returns true if all references in all included source units have been
     /// resolved.
     pub fn error(&self) -> Option<ResolverError> {
-        match self.unresolved.is_empty() {
+        match self.unresolved.is_empty() && self.redefinitions.is_empty() {
             true => None,
             false => Some(ResolverError { resolver: self })
         }