Fix memory-corruption.  Thanks to JonY for tracking it down.


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6389 4407c894-4637-0410-b4f5-ada5f102cad1

mingw-w64-tools/gendef/src/gendef_def.c

diff --git a/mingw-w64-tools/gendef/src/gendef_def.c b/mingw-w64-tools/gendef/src/gendef_def.c
index 294ca69..3073558 100644
--- a/mingw-w64-tools/gendef/src/gendef_def.c
+++ b/mingw-w64-tools/gendef/src/gendef_def.c
@@ -74,11 +74,12 @@
 	  r1 = r2;
 	}
       symbolname = r1;
-      r2 = strdup (dllname);
+      r2 = (char *) malloc (strlen (dllname) + 5);
+      strcpy (r2, dllname);
       strcpy (strchr (r2, '.'), ".dll");
       dllname = r2;
     }
-  def = (char *) malloc (strlen (dllname) + 4);
+  def = (char *) malloc (strlen (dllname) + 5);
   strcpy (def, dllname);
   strlwr (def);
   if (strchr (def, '.') == NULL)