Don't check g_free() arguments for NULL.

The g_free() call is guaranteed to not segfault when NULL is passed.

src/backend.c

@@ -418,8 +418,7 @@ SR_API int sr_init(struct sr_context **ctx)
 	ret = SR_OK;
 
 done:
-	if (context)
-		g_free(context);
+	g_free(context);
 	return ret;
 }
 

src/hardware/gmc-mh-1x-2x/api.c

@@ -345,8 +345,7 @@ exit_err:
 
 	if (serial)
 		sr_serial_dev_inst_free(serial);
-	if (devc)
-		g_free(devc);
+	g_free(devc);
 	if (sdi)
 		sr_dev_inst_free(sdi);
 

src/hardware/hameg-hmo/api.c

@@ -109,8 +109,7 @@ fail:
 		sr_scpi_hw_info_free(hw_info);
 	if (sdi)
 		sr_dev_inst_free(sdi);
-	if (devc)
-		g_free(devc);
+	g_free(devc);
 
 	return NULL;
 }

src/hardware/hameg-hmo/protocol.c

@@ -690,8 +690,7 @@ SR_PRIV int hmo_receive_data(int fd, int revents, void *cb_data)
 			break;
 		case SR_CHANNEL_LOGIC:
 			if (sr_scpi_get_uint8v(sdi->conn, NULL, &data) != SR_OK) {
-				if (data)
-					g_free(data);
+				g_free(data);
 				return TRUE;
 			}
 

src/hardware/manson-hcs-3xxx/api.c

@@ -197,8 +197,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 
 exit_err:
 	sr_dev_inst_free(sdi);
-	if (devc)
-		g_free(devc);
+	g_free(devc);
+
 	return NULL;
 }
 

src/hardware/motech-lps-30x/api.c

@@ -501,8 +501,7 @@ exit_err:
 		serial_close(serial);
 		sr_serial_dev_inst_free(serial);
 	}
-	if (devc)
-		g_free(devc);
+	g_free(devc);
 	if (sdi)
 		sr_dev_inst_free(sdi);
 

src/hardware/yokogawa-dlm/api.c

@@ -97,8 +97,7 @@ fail:
 		sr_scpi_hw_info_free(hw_info);
 	if (sdi)
 		sr_dev_inst_free(sdi);
-	if (devc)
-		g_free(devc);
+	g_free(devc);
 
 	return NULL;
 }

src/hardware/yokogawa-dlm/protocol_wrappers.c

@@ -92,6 +92,7 @@ int dlm_trigger_slope_get(struct sr_scpi_dev_inst *scpi,
 	}
 
 	g_free(resp);
+
 	return result;
 }
 

src/input/csv.c

@@ -777,11 +777,8 @@ static void cleanup(struct sr_input *in)
 	if (inc->comment)
 		g_string_free(inc->comment, TRUE);
 
-	if (inc->termination)
-		g_free(inc->termination);
-
-	if (inc->sample_buffer)
-		g_free(inc->sample_buffer);
+	g_free(inc->termination);
+	g_free(inc->sample_buffer);
 }
 
 static struct sr_option options[] = {