Resolves: rhbz#675806 crash in es thesaurus

(cherry picked from commit b788f9fc846c0f47d02df02ac6733c0ac21a13c6)

mythes/makefile.mk

@@ -41,8 +41,10 @@ TARFILE_MD5=067201ea8b126597670b5eff72e1f66c
 
 ADDITIONAL_FILES += makefile.mk
 
-PATCH_FILES=mythes-1.2.0-vanilla-th-gen-idx.patch \
-    mythes-1.2.0-makefile-mk.diff
+PATCH_FILES=\
+    mythes-1.2.0-vanilla-th-gen-idx.patch \
+    mythes-1.2.0-makefile-mk.diff \
+    mythes-1.2.1-rhbz675806.patch
 
 .IF "$(GUI)"=="UNX"
 CONFIGURE_DIR=$(BUILD_DIR)

mythes/mythes-1.2.1-rhbz675806.patch

+--- misc/mythes-1.2.0/mythes.cxx	2011-02-08 10:42:57.262964286 +0000
++++ misc/build/mythes-1.2.0/mythes.cxx	2011-02-08 10:43:06.305076490 +0000
+@@ -14,6 +14,7 @@
+     encoding = NULL;
+     list = NULL;
+     offst = NULL;
++    pdfile = NULL;
+ 
+     if (thInitialize(idxpath, datpath) != 1) {
+         fprintf(stderr,"Error - can't open %s or %s\n",idxpath, datpath);