fix: memory leaks

some code don't free allocated memory.

ntfsprogs/ntfsfix.c

@@ -1204,11 +1204,11 @@ static int fix_self_located_mft(ntfs_volume *vol)
 			ntfs_log_info(OK);
 			res = -1;
 		}
-		free(selfloc.mft0);
-		free(selfloc.mft1);
-		free(selfloc.mft2);
-		free(selfloc.attrlist);
 	}
+	free(selfloc.mft0);
+	free(selfloc.mft1);
+	free(selfloc.mft2);
+	free(selfloc.attrlist);
 	return (res);
 }
 
@@ -1421,10 +1421,10 @@ static int check_alternate_boot(ntfs_volume *vol)
 	} else {
 		ntfs_log_info("Error : could not read the boot sector again\n");
 	}
-	free(full_bs);
-	free(alt_bs);
 
 error_exit :
+	free(full_bs);
+	free(alt_bs);
 	return (res);
 }
 

ntfsprogs/ntfsusermap.c

@@ -781,7 +781,7 @@ static boolean outputmap(const char *volume, const char *dir)
 	char buf[256];
 	int fn;
 	char *fullname;
-	char *backup;
+	char *backup = NULL;
 	struct USERMAPPING *mapping;
 	boolean done;
 	boolean err;
@@ -895,6 +895,8 @@ static boolean outputmap(const char *volume, const char *dir)
 	if (!done)
 		fprintf(stderr, "* Could not create mapping file \"%s\"\n",
 				fullname);
+	free(backup);
+	free(fullname);
 	return (done);
 }
 
@@ -1005,7 +1007,8 @@ static boolean sanitize(void)
 						group->defined = AGREED;
 						group->next = firstmapping;
 						firstmapping = group;
-					}
+					} else 
+						free(group);
 				}
 			}
 		}