Merge branch 'jk/strvec-typefix' into maint

Correct nr and alloc members of strvec struct to be of type size_t.

* jk/strvec-typefix:
  strvec: use size_t to store nr and alloc

strvec.h

@@ -29,8 +29,8 @@ extern const char *empty_strvec[];
  */
 struct strvec {
 	const char **v;
-	int nr;
-	int alloc;
+	size_t nr;
+	size_t alloc;
 };
 
 #define STRVEC_INIT { empty_strvec, 0, 0 }