Added conditional on the ngspice program to prevent errors when spiceinit file is used with ngnutmeg

src/spinit.in

@@ -2,6 +2,10 @@
 alias exit quit
 alias acct rusage all
 set x11lineararcs
+
+strcmp __flag $program "ngspice"
+if $__flag = 0
+
 *set numparams
 
 * For SPICE2 POLYs, edit the below line to point to the location 
@@ -13,3 +17,6 @@ set x11lineararcs
 @XSPICEINIT@ codemodel @prefix@/lib/spice/digital.cm
 @XSPICEINIT@ codemodel @prefix@/lib/spice/xtradev.cm
 @XSPICEINIT@ codemodel @prefix@/lib/spice/xtraevt.cm
+
+end
+unset __flag