tests: Fix function signatures

tests/string/mem.c

@@ -2,7 +2,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-int main(int argc, char ** argv) {
+int main(void) {
     puts("# mem #");
     char arr[100];
     memset(arr, 0, 100); // Compiler builtin, should work

tests/string/strcat.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
     char dest1[12] = "hello";
 	  printf("%s\n", strcat(dest1, " world")); // should be hello world
 

tests/string/strchr.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
 	printf("%s\n", strchr("hello", 'e')); // should be ello
 	printf("%s\n", strchr("world", 'l')); // should be ld
 	printf("%i\n", strchr("world", 0) == NULL); // should be 1

tests/string/strcpy.c

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main() {
+int main(void) {
     char dst[20];
 
     strcpy(dst, "strcpy works!");

tests/string/strcspn.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
 	char *world = "world";
 	printf("%ld\n", strcspn("hello", world)); // should be 2
 	printf("%ld\n", strcspn("banana", world)); // should be 6

tests/string/strncmp.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
     printf("%d\n", strncmp("a", "aa", 2));
     printf("%d\n", strncmp("a", "aä", 2));
     printf("%d\n", strncmp("\xFF", "\xFE", 2));

tests/string/strpbrk.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
     char* source = "The quick drawn fix jumps over the lazy bug";
 
     // should be "The quick drawn fix jumps over the lazy bug"

tests/string/strrchr.c

@@ -1,8 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-
-int main(int argc, char* argv[]) {
+int main(void) {
   char s0[] = "hello, world";
   char* ptr = strrchr(s0, 'l');
   if (ptr != &s0[10]) {

tests/string/strspn.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
 	char *hello = "hello";
 	char *world = "world";
 	char *banana = "banana";

tests/string/strstr.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
     printf("%s\n", strstr("In relibc we trust", "rust"));
     printf("%s\n", strstr("In relibc we trust", "libc"));
     printf("%s\n", strstr("In relibc we trust", "bugs"));

tests/string/strtok.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
     char source[] = "I'd just like to interject for a moment.  What you're referring to as Linux, "
                     "is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux.\n";
 

tests/string/strtok_r.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <stdio.h>
 
-int main(int argc, char* argv[]) {
+int main(void) {
     char source[] = "I'd just like to interject for a moment.  What you're referring to as Linux, "
                     "is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux.\n";
     char* sp;