SDL_syspower.c: remove redundant expression
diff --git a/src/power/linux/SDL_syspower.c b/src/power/linux/SDL_syspower.c
index 38b3cae..9aa93b4 100644
--- a/src/power/linux/SDL_syspower.c
+++ b/src/power/linux/SDL_syspower.c
@@ -99,7 +99,7 @@ make_proc_acpi_key_val(char **_ptr, char **_key, char **_val)
*(ptr++) = '\0'; /* terminate the key. */
- while ((*ptr == ' ') && (*ptr != '\0')) {
+ while (*ptr == ' ') {
ptr++; /* skip whitespace. */
}