Guard state initialization with try to avoid panic in initialization.

Author: artifex-tor

jsstate.c

@@ -322,12 +322,18 @@ js_State *js_newstate(js_Alloc alloc, void *actx, int flags)
 	J->nextref = 0;
 	J->gcthresh = 0; /* reaches stability within ~ 2-5 GC cycles */
 
+	if (js_try(J)) {
+		js_freestate(J);
+		return NULL;
+	}
+
 	J->R = jsV_newobject(J, JS_COBJECT, NULL);
 	J->G = jsV_newobject(J, JS_COBJECT, NULL);
 	J->E = jsR_newenvironment(J, J->G, NULL);
 	J->GE = J->E;
 
 	jsB_init(J);
 
+	js_endtry(J);
 	return J;
 }

main.c

@@ -311,6 +311,10 @@ main(int argc, char **argv)
 	}
 
 	J = js_newstate(NULL, NULL, strict ? JS_STRICT : 0);
+	if (!J) {
+		fprintf(stderr, "Could not initialize MuJS.\n");
+		exit(1);
+	}
 
 	js_newcfunction(J, jsB_gc, "gc", 0);
 	js_setglobal(J, "gc");