Fix #10610.

Added missing initializer for fContext in PackageInfoErrorListener whose
absence was leading to crashes when generating the error string.

src/kits/package/manager/RepositoryBuilder.cpp

@@ -34,6 +34,7 @@ namespace {
 class PackageInfoErrorListener : public BPackageInfo::ParseErrorListener {
 public:
 	PackageInfoErrorListener(const char* context)
+		: fContext(context)
 	{
 	}