tree-wide: remove some spurious newlines

Specifically, remove double newlines, and newlines before '}'.

src/basic/format-util.c

@@ -62,5 +62,4 @@ char* format_bytes_full(char *buf, size_t l, uint64_t t, FormatBytesFlag flag) {
 finish:
         buf[l-1] = 0;
         return buf;
-
 }

src/basic/in-addr-util.c

@@ -942,7 +942,6 @@ int in_addr_prefix_from_string_auto_full(
                 *ret_prefixlen = k;
 
         return 0;
-
 }
 
 void in_addr_hash_func(const union in_addr_union *u, int family, struct siphash *state) {

src/basic/io-util.h

@@ -42,5 +42,4 @@ static inline bool FILE_SIZE_VALID_OR_INFINITY(uint64_t l) {
                 return true;
 
         return FILE_SIZE_VALID(l);
-
 }