This does not fix noise analysis with klu.

It does add missing { and } when event-driven instances are not present.
Without this change CKTop will always be called again directly in NOISEan even
if CKTop was previously called by EVTop. This matches the intended
behavior before #ifdef KLU was added.

src/spicelib/analysis/noisean.c

@@ -189,6 +189,7 @@ NOISEan(CKTcircuit* ckt, int restart)
             EVTop_save(ckt, MIF_TRUE, 0.0);
         }
         else
+        { // start of no XSPICE event-driven instances
 #endif
 
 #ifdef KLU
@@ -216,10 +217,13 @@ NOISEan(CKTcircuit* ckt, int restart)
                     return(error);
                 }
             }
-            else
+            else {
                 fprintf(stdout, "\n Linear circuit, option noopac given: no OP analysis\n");
+            }
 
 #ifdef XSPICE
+        } // end of no XSPICE event-driven instances
+
         /* gtri - add - wbk - 12/19/90 - Add IPC stuff */
 
             /* Send the operating point results for Mspice compatibility */