Use struct member to determine size of allocations

Author: BenBE

Header.c

@@ -149,8 +149,8 @@ void Header_writeBackToSettings(const Header* this) {
       const Vector* vec = this->columns[col];
       int len = Vector_size(vec);
 
-      colSettings->names = len ? xCalloc(len + 1, sizeof(char*)) : NULL;
-      colSettings->modes = len ? xCalloc(len, sizeof(MeterModeId)) : NULL;
+      colSettings->names = len ? xCalloc(len + 1, sizeof(*colSettings->names)) : NULL;
+      colSettings->modes = len ? xCalloc(len, sizeof(*colSettings->modes)) : NULL;
       colSettings->len = len;
 
       for (int i = 0; i < len; i++) {

Settings.c

@@ -163,8 +163,8 @@ static void Settings_defaultMeters(Settings* this, unsigned int initialCpuCount)
    this->hLayout = HF_TWO_50_50;
    this->hColumns = xCalloc(HeaderLayout_getColumns(this->hLayout), sizeof(MeterColumnSetting));
    for (size_t i = 0; i < 2; i++) {
-      this->hColumns[i].names = xCalloc(sizes[i] + 1, sizeof(char*));
-      this->hColumns[i].modes = xCalloc(sizes[i], sizeof(MeterModeId));
+      this->hColumns[i].names = xCalloc(sizes[i] + 1, sizeof(*this->hColumns[0].names));
+      this->hColumns[i].modes = xCalloc(sizes[i], sizeof(*this->hColumns[0].modes));
       this->hColumns[i].len = sizes[i];
    }