fundamental: move strv_isempty() into src/fundamental/

src/basic/strv.h

@@ -104,10 +104,6 @@ static inline const char* STRV_IFNOTNULL(const char *x) {
         return x ?: STRV_IGNORE;
 }
 
-static inline bool strv_isempty(char * const *l) {
-        return !l || !*l;
-}
-
 int strv_split_full(char ***t, const char *s, const char *separators, ExtractFlags flags);
 char** strv_split(const char *s, const char *separators);
 

src/boot/boot.c

@@ -2547,7 +2547,7 @@ static EFI_STATUS initrd_prepare(
         assert(ret_initrd_pages);
         assert(ret_initrd_size);
 
-        if (entry->type != LOADER_LINUX || !entry->initrd) {
+        if (entry->type != LOADER_LINUX || strv_isempty(entry->initrd)) {
                 *ret_options = NULL;
                 *ret_initrd_pages = (Pages) {};
                 *ret_initrd_size = 0;

src/fundamental/strv-fundamental.h

@@ -2,9 +2,14 @@
 #pragma once
 
 #include "macro-fundamental.h"
+#include "string-util-fundamental.h"
 
 #define _STRV_FOREACH(s, l, i)                                          \
         for (typeof(*(l)) *s, *i = (l); (s = i) && *i; i++)
 
 #define STRV_FOREACH(s, l)                      \
         _STRV_FOREACH(s, l, UNIQ_T(i, UNIQ))
+
+static inline bool strv_isempty(sd_char * const *l) {
+        return !l || !*l;
+}