apps: make memeater use strerror()

apps/src/memeater.c

@@ -1,6 +1,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #define CHUNK 4194304 // 4 MB
@@ -14,6 +15,6 @@ int main()
         printf("Allocating 4 MB of memory... %lx\n", (unsigned long)allocated);
         sleep(1);
     } while ((allocated = malloc(CHUNK)));
-    printf("Out of memory. (errno=%d)\n", errno);
+    printf("Out of memory. (errno=%d, %s)\n", errno, strerror(errno));
     printf("Press any key to restart.\n");
 }