Update p_a_c_k_e_r_unpacker.js: fix tests

Closes #2078

Author: Infocatcher

js/src/unpackers/p_a_c_k_e_r_unpacker.js

@@ -103,8 +103,8 @@ var P_A_C_K_E_R = {
     t.expect("function test (){alert ('This is a test!')}; " +
       "eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String))" +
       "{while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function" +
-      "(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp(" +
-      "'\\b'+e(c)+'\\b','g'),k[c]);return p}('0 2=\\\'{Íâ–+›ï;ã†Ù¥#\\\'',3,3," +
+      "(){return'\\\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp(" +
+      "'\\\\b'+e(c)+'\\\\b','g'),k[c]);return p}('0 2=\\'{Íâ–+›ï;ã†Ù¥#\\'',3,3," +
       "'var||a'.split('|'),0,{}))",
       "function test (){alert ('This is a test!')}; var a='{Íâ–+›ï;ã†Ù¥#'");