Free some memory allocations

Change-Id: Ifb6c186e43e1eb068e8075def16924ced04bb23d
diff --git a/partition.cpp b/partition.cpp
index e110ba7..5058e1d 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -1572,6 +1572,7 @@
 						} else {
 							LOGINFO("Successfully wiped crypto footer.\n");
 						}
+						free(buffer);
 					}
 				}
 			}