fix incorrect fprintf() usage

src/xspice/evt/evtinit.c

@@ -222,7 +222,7 @@ static int EVTcheck_nodes(
                                           event_node->name,
                                           err_collide);
 
-		fprintf(stdout,errMsg);
+		fprintf(stdout, "%s", errMsg);
 
                 return(E_PRIVATE);
             }

src/xspice/mif/mifgetmod.c

@@ -224,7 +224,7 @@ char *MIFgetMod(
 
 						sprintf(temp, "MIF: unrecognized parameter (%s) - ignored\n", parm);
 
-						fprintf(stdout,temp);
+						fprintf(stdout, "%s", temp);
 						err = TMALLOC(char, 2 * strlen(temp) + 2);// K.A. added 5 March 2000
                   
 						*err = '\0';// K.A. added 5 March 2000