Add missing memory header needed by std::unique_ptr

src/algebra.cc

@@ -35,6 +35,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <memory>
 
 /* find the operand in the given expression
  * returns the index of the first op character or -1 on error

src/mboxscan.cc

@@ -35,6 +35,7 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <errno.h>
+#include <memory>
 
 #define FROM_WIDTH 10
 #define SUBJECT_WIDTH 22

src/proc.cc

@@ -35,6 +35,7 @@
 #include <unistd.h>
 #include <ctype.h>
 #include <dirent.h>
+#include <memory>
 
 char* readfile(char* filename, int* total_read, char showerror) {
 	FILE* file;

src/user.cc

@@ -33,6 +33,7 @@
 #include <grp.h>
 #include <errno.h>
 #include "conky.h"
+#include <memory>
 
 void print_uid_name(struct text_object *obj, char *p, int p_max_size) {
 	struct passwd *pw;