Free frame on error in SpectSeq::Load2.

src/spectseq.cpp

 
 		if(import==1)
 		{
-			if(frame->Import(stream) != 0) break;
+			if(frame->Import(stream) != 0)
+			{
+				delete frame;
+				break;
+			}
 		}
 		else
 		if(import==2)
 		{
-			if(frame->ImportSPC2(stream,time_acc) != 0) break;
+			if(frame->ImportSPC2(stream,time_acc) != 0)
+			{
+				delete frame;
+				break;
+			}
 		}
 		else
 		{
-			if(frame->Load(stream, file_format) != 0) break;
+			if(frame->Load(stream, file_format) != 0)
+			{
+				delete frame;
+				break;
+			}
 		}
 
 		frames[numframes++] = frame;