Fix couple of issue found in compile testing

src/lookup_table.c

@@ -25,6 +25,7 @@
 #include <linux/capability.h>
 #include <strings.h>
 #include <stdio.h>
+#include <stdlib.h>  // free
 
 
 #define hidden __attribute__ ((visibility ("hidden")))
@@ -115,13 +116,13 @@ const char *capng_capability_to_name(unsigned int capability)
 
 	ptr = capng_lookup_number(captab, captab_msgstr.str,
                                    CAP_NG_CAPABILITY_NAMES, capability);
-	if (ptr == NULL) // This leaks memory, but should almost never be used
+	if (ptr == NULL) { // This leaks memory, but should almost never be used
 		free(ptr2);
 		if (asprintf(&ptr2, "cap_%u", capability) < 0)
 			ptr = NULL;
 		else
 			ptr = ptr2;
-
+	}
 	return ptr;
 }