[PATCH] Clean up memory allocations in locate_hole()

[horms at verge.net.au (Horms)]

* Exit if malloc fails - previously the error was ignored
* Free allocated memory before returning

Signed-off-by: Simon Horman <horms at verge.net.au>

Index: kexec-tools-unstable/kexec/kexec.c
===================================================================
--- kexec-tools-unstable.orig/kexec/kexec.c	2007-02-01 11:50:28.000000000 +0900
+++ kexec-tools-unstable/kexec/kexec.c	2007-02-01 11:50:32.000000000 +0900
@@ -197,6 +197,10 @@
 	/* Compute the free memory ranges */
 	max_mem_ranges = memory_ranges + info->nr_segments;
 	mem_range = malloc(max_mem_ranges *sizeof(struct memory_range));
+	if (!mem_range) {
+		perror("locate_hole: malloc");
+		exit(-1);
+	}
 	mem_ranges = 0;
 		
 	/* Perform a merge on the 2 sorted lists of memory ranges  */
@@ -265,6 +269,7 @@
 			}
 		}
 	}
+	free(mem_range);
 	if (hole_base == ULONG_MAX) {
 		fprintf(stderr, "Could not find a free area of memory of "
 			"%lx bytes...\n", hole_size);