Fix a few illegal pointer usages (HDFGroup#5279)

Author: TedLyngmo

src/H5Shyper.c

@@ -12334,7 +12334,7 @@ H5S_hyper_get_first_inc_block(const H5S_t *space, hsize_t clip_size, bool *parti
     if (diminfo->start >= clip_size) {
         ret_value = 0;
         if (partial)
-            partial = false;
+            *partial = false;
     } /* end if */
     else {
         /* Calculate index of first incomplete block */

test/cache.c

@@ -13800,12 +13800,12 @@ check_check_evictions_enabled_err(unsigned paged)
 
         (cache_ptr->resize_ctl).incr_mode = H5C_incr__threshold;
 
-        result = H5C_get_evictions_enabled(cache_ptr, false);
+        result = H5C_set_evictions_enabled(cache_ptr, false);
 
         if (result == SUCCEED) {
 
             pass         = false;
-            failure_mssg = "H5C_get_evictions_enabled succeeded() 1.\n";
+            failure_mssg = "H5C_set_evictions_enabled succeeded() 1.\n";
         }
         else if (cache_ptr->evictions_enabled == true) {
         }
@@ -13817,12 +13817,12 @@ check_check_evictions_enabled_err(unsigned paged)
 
         (cache_ptr->resize_ctl).decr_mode = H5C_decr__threshold;
 
-        result = H5C_get_evictions_enabled(cache_ptr, false);
+        result = H5C_set_evictions_enabled(cache_ptr, false);
 
         if (result == SUCCEED) {
 
             pass         = false;
-            failure_mssg = "H5C_get_evictions_enabled succeeded() 2.\n";
+            failure_mssg = "H5C_set_evictions_enabled succeeded() 2.\n";
         }
 
         (cache_ptr->resize_ctl).decr_mode = H5C_decr__off;