Fix PU definition in INXI branch.

src/sphere/edfb.cpp

@@ -345,7 +345,7 @@ int main(int argc, char **argv) {
       }
       vss = xi_vector.to_array();
       xiv = xi_vector.to_array();
-      pu = xip + wp;
+      pu = xip * wp;
       wn = pu / 3.0e8;
       fprintf(output, "          XIP          WN           WL           PU           EV\n");
       fprintf(output, "     %13.4lE", xip);