CI Tests: fix /tests/Sanity/basic-linking-sanity

* use 'fclose'
* add missing includes

tests/Sanity/basic-linking-sanity/lc.c

@@ -15,7 +15,7 @@ int main(){
   two[3] = '\0';
   fprintf(fp, "Two: %s, length %d\n", two, strlen(two));
 
-  close(fp);
+  fclose(fp);
   free(two);
   return 0;
 }

tests/Sanity/basic-linking-sanity/lm.c

@@ -8,6 +8,6 @@ int main(){
   fprintf(fp, "SIN: %0.2f\n", 1.0);
 
 
-  close(fp);
+  fclose(fp);
   return 0;
 }

tests/Sanity/basic-linking-sanity/lpthread.c

@@ -41,6 +41,6 @@ int main(){
   pthread_join(tw, NULL);
   pthread_join(on, NULL);
 
-  close(fp);
+  fclose(fp);
   return 0;
 }

tests/Sanity/basic-linking-sanity/lrt.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <sys/mman.h>
 #include <fcntl.h>
 
 int main(){
@@ -16,6 +17,6 @@ int main(){
   else
     fprintf(fp, "shm_unlink successful\n");
 
-  close(fp);
+  fclose(fp);
   return 0;
 }