Avoid leaking a file descriptor on error. Thanks PovAddict for running cppcheck.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40037 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/debugger/files/SourceFile.cpp

@@ -63,12 +63,16 @@ SourceFile::Init(const char* path)
 		return errno;
 	}
 
-	if (st.st_size > kMaxSourceFileSize)
+	if (st.st_size > kMaxSourceFileSize) {
+		close (fd);
 		return B_FILE_TOO_LARGE;
+	}
 	size_t fileSize = st.st_size;
 
-	if (fileSize == 0)
+	if (fileSize == 0) {
+		close (fd);
 		return B_BAD_VALUE;
+	}
 
 	// allocate the content buffer
 	fFileContent = (char*)malloc(fileSize + 1);